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[ "cloudy is a kind of weather & rainy is a kind of weather & cold is a kind of weather & windy is a kind of weather -> windy, cloudy, rainy, and cold are all kinds of weather", " " ]

[ "a barometer is used to measure air pressure & a barometer is a kind of instrument -> a barometer is an instrument used to measure air pressure", " " ]

[ "a barometer is used to measure air pressure & a barometer is a kind of instrument -> a barometer is an instrument used to measure air pressure", " " ]

[ "a barometer is used to measure air pressure & air pressure is a property of air -> a barometer is used to meausre the air pressure property", " " ]

[ "a property is a kind of information & temperature is a property of weather -> temperature is a kindof information about weather", " temperature is a kindof information about weather & a thermometer is used to measure temperature -> a thermometer is used to measure the information about weather on temperature", " " ]

[ "cold fronts cause thunderstorms as they pass by & a large cold front is moving past the school -> the large cold front passing the school will cause thunderstorms", " the large cold front passing the school will cause thunderstorms & the weather at school is hot and humid -> the weather will change from hot and humid to having thunderstorms at the school", " " ]

[ "investigating a process requires investigating every stage of the process & scientists want to investigate the water cycle & a cycle is a kind of process -> scientists have to investigate every stage of the water cycle", " scientists have to investigate every stage of the water cycle & precipitation is a stage in the water cycle process -> scientists have to investigate precipitation in the water cycle", " scientists have to investigate precipitation in the water cycle & investigating something requires investigating the properties of something -> scientists have to investigate the properties of percipitation", " scientists have to investigate the properties of percipitation & the amount of precipitation is a property of precipitation & investigating sometimes requires measuring -> scientists have to meausre the amount of precipitation", " " ]

[ "an anemometer is a kind of instrument & an anemometer is used to measure wind speed -> an anemometer is an instrument used to measure wind speed", " " ]

[ "clear weather means sunny / not cloudy / not rainy weather & high pressure systems cause clear weather -> high pressure systems can cause sunny weather", " " ]

[ "hurricane is a kind of severe weather & a weather map is a map showing the weather for an area -> a hurricane will be shown on a weather map", " " ]

[ "wind direction is a property of weather & a property is a kind of information -> wind direction is a kind of information about weather", " wind direction is a kind of information about weather & a station model is used for displaying information about weather in a particular point and time -> wind direction in a particular point and time is displayed in a station model", " " ]

[ "transpiration is a stage in the water cycle process & transpiration is when water vapor moves from plants into the atmosphere -> transpiration of plants is a stage in the water cycle process by moving water vapor from plants to atmosphere", " " ]

[ "water is a kind of substance & condensing means a substance changes from a gas into a liquid by decreasing heat energy -> water condensing means water changes from a gas to a liquid by decreasing heat energy", " water condensing means water changes from a gas to a liquid by decreasing heat energy & water is in the liquid state, called liquid water & water is in the gas state , called water vapor -> water condensing means water changes from water vapor to liquid water by decreasing heat energy", " cooling means temperature decreases & temperature is a measure of heat energy -> cooling means decreasing in heat energy", " water condensing means water changes from water vapor to liquid water by decreasing heat energy & cooling means decreasing in heat energy & water vapor is rapidly cooled -> water vapor cooling causes that water vapor to condense into liquid water", " " ]

[ "condensing means a substance changes from a gas into a liquid by decreasing heat energy0 & temperature is a measure of heat energy & colder means lower in temperature -> colder means a decrease in heat energy", " colder means a decrease in heat energy & air is rising to a colder region -> the heat energy of the air will decrease when air is rising to a colder region", " condensing means a substance changes from a gas into a liquid by decreasing heat energy1 & water vapor is found in the atmosphere -> air contains water vapor", " the heat energy of the air will decrease when air is rising to a colder region & air contains water vapor -> the water vapor in air will decrease in heat energy when air is rising to a colder region", " condensing means a substance changes from a gas into a liquid by decreasing heat energy & water is a kind of substance -> water condensing is when water changing from a gas into a liquid by decreasing heat energy", " water condensing is when water changing from a gas into a liquid by decreasing heat energy & water is in the gas state , called water vapor & water is in the liquid state, called liquid water -> water condensing is when water changing from water vapor into liquid water by decreasing heat energy", " the water vapor in air will decrease in heat energy when air is rising to a colder region & water condensing is when water changing from water vapor into liquid water by decreasing heat energy -> air rising into a colder region will cause the water vapor in air to condense", " air rising into a colder region will cause the water vapor in air to condense & clouds are formed by water vapor rising into colder regions of the atmosphere and condensing into rain droplets -> air rising into a colder region will cause the water vapor to condense into rain droplets", " " ]

[ "evaporation is when water is drawn back up into the air in the water cycle & in the water cycle , evaporation always follows collection in bodies of water & bodies of water are located on the surface of the earth -> evaporation will transfer the water in bodies of water on the surface of earth back into the air", " " ]

[ "transpiration is when water vapor moves from plants into the atmosphere & clouds are made of water vapor -> transpiration transfers the water vapor making up clouds from plants into atmosphere", " transpiration transfers the water vapor making up clouds from plants into atmosphere & transpiration is a stage in the water cycle process -> transpiration is a stage in the water cycle that transfers the water vapor making up clouds from plants into atmosphere", " " ]

[ "in the water cycle , collection in bodies of water can follow runoff & in the water cycle , runoff can follow precipitation -> collection in bodies of water happens after precipitation and runoff", " collection in bodies of water happens after precipitation and runoff & collection in water cycle is when precipitation is collected in bodies of water -> precipitation will be collected in bodies of water after precipitation and runoff", " precipitation will be collected in bodies of water after precipitation and runoff & a lake is a kind of body of water -> lakes are formed by precipitation and runoff", " " ]

[ "a thunderstorm is a kind of storm & a storm is a source of heavy rain -> a thunderstorm is a source of heavy rain", " a thunderstorm is a source of heavy rain & rain causes bodies of water to increase amount of water they contain -> a thunderstorm can cause bodies of water to increase amount of water they contain", " a thunderstorm can cause bodies of water to increase amount of water they contain & when a body of water receives more water than it can hold , a flood occurs -> a thunderstorm can cause bodies of water to flood", " a thunderstorm can cause bodies of water to flood & a stream is a kind of moving body of water -> a thunderstorm can cause a stream to flood", " " ]

[ "snow is a kind of precipitation & hail is a kind of precipitation & sleet is a kind of precipitation & rain is a kind of precipitation -> hail, snow, sleet, and rain are different kinds of precipitation", " " ]

[ "water vapor condensing in clouds causes rain & rain is a kind of precipitation -> water vapor has to condense in clouds before clouds producing precipitation", " " ]

[ "hail is a kind of precipitation & sleet is a kind of precipitation -> hail and sleet are different kinds of precipitation", " " ]

[ "when water falls from the sky , that water usually returns to the soil & precipitation is when water falls from the sky -> when precipitation happens, water usually returns to the soil", " when precipitation happens, water usually returns to the soil & precipitation is a stage in the water cycle process -> precipitation is a stage in water cycle where the water will return to the soil", " " ]

[ "the temperature is below freezing & the freezing point of water is 32f / 0c / 273k & freezing is usually used to refer the freezing point of water in real life -> the temperature is below 0 c", " the temperature is below 0 c & precipitation is when water falls from the sky & water is in the solid state , called ice , for temperatures between 0 / -459 / -273 and 273 / 32 / 0 k / f / c -> the precipitation of water will be in ice form when temperature is below 0 c", " snow is a kind of ice & snow is a kind of precipitation -> snow is precipitation in ice form", " the precipitation of water will be in ice form when temperature is below 0 c & snow is precipitation in ice form -> the precipitation will be in snow form when the temperature is below 0c", " " ]

[ "water is a kind of substance & water absorbs solar energy in the water cycle & if a substance absorbs solar energy then that substance will increase in temperature -> water absorbing solar energy will increase in temperature", " water absorbing solar energy will increase in temperature & temperature is a measure of heat energy -> water absorbing solar energy will increase in heat energy", " water is a kind of substance & evaporation means a substance changes from a liquid into a gas by increasing heat energy -> evaporation of water is when water changes from a liquid into a gas by increasing heat energy", " water absorbing solar energy will increase in heat energy & evaporation of water is when water changes from a liquid into a gas by increasing heat energy -> water absorbing solar energy will cause the evaporation of water", " water absorbing solar energy will cause the evaporation of water & the sun is a source of solar energy called sunlight -> in the water cycle the sun has the role of causing evaporation", " " ]

[ "water is a kind of substance & if a substance absorbs solar energy then that substance will increase in temperature & water absorbs solar energy in the water cycle -> water absorbing solar energy will increase in temperature", " water absorbing solar energy will increase in temperature & temperature is a measure of heat energy -> water absorbing solar energy will increase in heat energy", " water absorbing solar energy will increase in heat energy & evaporation means a substance changes from a liquid into a gas by increasing heat energy -> water absorbing solar energy will change water into gas state", " water absorbing solar energy will change water into gas state & water is in the gas state , called water vapor -> water absorbing solar energy will change water into water vapor", " water absorbing solar energy will change water into water vapor & sun radiation is similar to solar energy -> water absorbing sun radiation will change water into water vapor", " " ]

[ "the sun is the source of energy for physical cycles on earth & an example of a physical cycle is the water cycle -> the sun is the source of energy for water cycle on earth", " the sun is the source of energy for water cycle on earth & precipitation is a stage in the water cycle process -> the sun is the source of energy for evaporation in the water cycle on earth", " " ]

[ "if a substance absorbs solar energy then that substance will increase in temperature & water absorbs solar energy in the water cycle & water is a kind of substance -> water absorbing solar energy will increase in temperature", " water absorbing solar energy will increase in temperature & temperature is a measure of heat energy -> water absorbing solar energy will increase in heat energy", " evaporation means a substance changes from a liquid into a gas by increasing heat energy & water is a kind of substance -> evaporation of water is when water changes from a liquid into a gas by increasing heat energy", " water absorbing solar energy will increase in heat energy & evaporation of water is when water changes from a liquid into a gas by increasing heat energy -> water absorbing solar energy will cause the evaporation of water", " water absorbing solar energy will cause the evaporation of water & the sun is a source of solar energy called sunlight -> in the water cycle the sun has the role of causing evaporation", " " ]

[ "an example of a physical cycle is the water cycle & the sun is the source of energy for physical cycles on earth -> the sun is the source of energy for water cycle on earth", " the sun is the source of energy for water cycle on earth & evaporation is a stage in the water cycle process & precipitation is a stage in the water cycle process -> the sun is the source of energy for evaporation and precipitation in the water cycle on earth", " " ]

[ "the sun transfers light and heat energy from itself to the planets through sunlight & earth is a kind of planet -> the sun transfer light and heat energy from itself to the earth through sunlight", " " ]

[ "when one kind of energy changes into another kind of energy , the total amount of energy is constant & energy transformation means one kind of energy changes into another kind of energy -> when energy transformation happens, the total amount of energy is constant", " when energy transformation happens, the total amount of energy is constant & energy transformation means energy conversion -> when energy conversion happens, the total amount of energy is constant", " " ]

[ "when an animal moves , chemical energy is converted to mechanical energy & a human is a kind of animal -> when a human moves, chemical energy is converted to mechanical energy", " when a human moves, chemical energy is converted to mechanical energy & when one kind of energy changes into another kind of energy , the total amount of energy is constant & mechanical energy is a kind of energy & chemical energy is a kind of energy -> when a human moves, the total amount of energy is constant", " " ]

[ "a car engine started and converted gasoine into heat and sound energy & gasoline is a source of chemical energy -> a car engine started and converted the chemical energy in gasoline into heat and sound energy", " a car engine started and converted the chemical energy in gasoline into heat and sound energy & sound is a kind of mechanical energy -> a car engine usually converts chemical energy into mechanical energy and heat energy", " a car engine usually converts chemical energy into mechanical energy and heat energy & when one kind of energy changes into another kind of energy , the total amount of energy is constant -> when the car engined started the total amound of energy is constant", " " ]

[ "a gasoline engine is a kind of internal combustion engine & a gasoline engine is a part of gasoline lawn mower -> an internal combustion engine is a part of gasoline lawn mower", " an internal combustion engine is a part of gasoline lawn mower & an internal combustion engine usually converts fuel / chemical energy into mechanical energy and heat energy through combustion -> the gasoline lawn mower converts chemical energy into mechanical energy", " " ]

[ "the encoders in the telephone converts sound energy into electrical energy & when a person speaks into a telephone, the sound energy is taken in by the encoder -> when a person speaks into a telephone, the sound energy is converted into electrical energy by the encoder", " " ]

[ "rotation is a kind of motion & an electric motor is a part of an electric fan for rotating the vanes in the fan -> the electric motor in the fan causes the vanes in the fan to move", " the electric motor in the fan causes the vanes in the fan to move & an example of mechanical energy is an object in motion -> the electric motor in the fan causes the vanes to have mechanical energy", " the electric motor in the fan causes the vanes to have mechanical energy & an electric motor converts electrical energy into mechanical energy -> a fan converts electrical energy into mechanical energy", " " ]

[ "battery is the source of electrical energy for battery-operated device & a flashlight is a kind of battery-operated device -> battery is the source of electrical energy for a flashlight", " a flashlight is a kind of electrical device & electrical devices convert from electrical energy into other forms of energy -> a flashlight converts electrical energy into other forms of energy", " a flashlight converts electrical energy into other forms of energy & light is a kind of energy & a kind of is similar to a form of & a flashlight emits light -> a flashlight converts electrical energy into light energy", " battery is the source of electrical energy for a flashlight & a flashlight converts electrical energy into light energy -> a flashlight converts electrical energy from the battery into light energy", " a flashlight converts electrical energy from the battery into light energy & batteries convert chemical energy to electrical energy -> when a flashlight is used, the energy is changed from chemical energy into light energy", " " ]

[ "electrical devices convert from electrical energy into other forms of energy & a flashlight is a kind of electrical device -> a flashlight converts electrical energy into other forms of energy", " a flashlight converts electrical energy into other forms of energy & a flashlight emits light & a kind of is similar to a form of & light is a kind of energy -> a flashlight converts electrical energy into light energy", " " ]

[ "an electric motor is a part of an electric fan for rotating the vanes in the fan & rotation is a kind of motion -> the electric motor in the fan causes the vanes in the fan to move", " the electric motor in the fan causes the vanes in the fan to move & an example of mechanical energy is an object in motion -> the electric motor in the fan causes the vanes to have mechanical energy", " the electric motor in the fan causes the vanes to have mechanical energy & an electric motor converts electrical energy into mechanical energy -> a fan converts electrical energy into mechanical energy", " " ]

[ "a doorbell is a kind of electric device & closing an electric circuit causes an electrical device to function -> an electric circuit causes a doorbell to function", " an electric circuit causes a doorbell to function & a doorbell converts electrical energy into sound energy -> an electric circuit causes the doorbell to convert the electrical energy into sound energy", " " ]

[ "photovoltaic cells can be used in handheld calculators & photovoltaic cells convert light energy into electricity / electrical energy -> photovoltaic cells are used in handheld calculators to convert light energy into electricity", " " ]

[ "electric devices require electrical energy to function & household appliances are a kind of electric device -> household appliances require electrical energy to function", " household appliances require electrical energy to function & solar cells convert solar energy into electrical energy -> the energy absorbed by solar cells will be used on powering household appliances", " " ]

[ "a hurricane is a kind of heat engine & a heat engine converts heat energy into mechanical energy -> a hurricane converts heat energy into mechanical energy", " " ]

[ "a tree is a kind of plant & a redwood tree is a kind of tree & a giant redwood tree is a kind of redwood tree -> a giant redwood tree is a kind of plant", " a giant redwood tree is a kind of plant & green plants perform photosynthesis to get food -> the giant redwood tree would perform photosynthesis to get food", " the giant redwood tree would perform photosynthesis to get food & photosynthesis means green plants convert solar energy to food -> the giant redwood tree performs photosynthesis to get food by converting solar energy to food", " the giant redwood tree performs photosynthesis to get food by converting solar energy to food & food is a kind of chemical energy -> the giant redwood tree performs photosynthesis to get food by converting solar energy to chemical energy", " " ]

[ "lighting a candle causes that candle to burn & burning is similar to combustion -> lighting a candle causes the candle to combust", " lighting a candle causes the candle to combust & a candle is made of wax -> lighting a candle causes the wax in candle to combust", " lighting a candle causes the wax in candle to combust & wax contains chemical energy & combustion means fire converts chemical energy into light energy and heat energy -> combustion converts the chemical energy in wax into light and heat energy", " combustion converts the chemical energy in wax into light and heat energy & energy transformation means one kind of energy changes into another kind of energy -> the energy transformation in wax is from chemical energy to light and heat energy", " " ]

[ "fuel is a source of mechanical energy for cars to move & the car runs out of fuel -> the car does not have a source of mechanical energy to move", " a car is moving on a level road & if one surface is moving on another surface then those surfaces are touching -> the moving car and the road are touching on their surfaces", " if an object is not moving it does not have any motion to counter & friction acts to counter the motion of two objects when their surfaces are touching -> friction acts to counter the motion of only moving objects when the surfaces of two objects are touching", " the moving car and the road are touching on their surfaces & friction acts to counter the motion of only moving objects when the surfaces of two objects are touching -> friction will counter the motion of the moving car", " friction will counter the motion of the moving car & countering the motion of a moving object means decreasing the mechanical energy of the moving object -> friction will decrease the mechanical energy of the moving car", " the car does not have a source of mechanical energy to move & friction will decrease the mechanical energy of the moving car -> the car does not have a source of mechanical energy and friction will decrease the mechanical energy of the moving car", " the car does not have a source of mechanical energy and friction will decrease the mechanical energy of the moving car & if something is decreased and there is no source of that something to provide more of that something, then that something will decrease to 0 -> the mechanical energy of the moving car will be decreased by friction to 0", " the mechanical energy of the moving car will be decreased by friction to 0 & if an object has 0 mechanical energy, then the object will stop moving -> the car will stop when the mechanical energy in it is decreased by friction to 0", " " ]

[ "sonar usually is used for locating objects underwater & sonar is used to find the location of an object by sound waves -> sonar uses sound waves to locate objects underwater", " " ]

[ "creating a simple circuit requires a wire / battery & the wire's ends were connected to a battery -> the wire's ends were connected to a simple circuit", " the wire's ends were connected to a simple circuit & wire was looped several times around an iron nail -> the wire is looped several times around an iron nail and is connected to a circuit", " the wire is looped several times around an iron nail and is connected to a circuit & a electromagnet is formed by attaching an iron nail wrapped in a copper wire to a circuit -> an electromaget is formed when a wire is looped around an iron nail and is connceted to a circuit", " an electromaget is formed when a wire is looped around an iron nail and is connceted to a circuit & electromagnets generate magnetic fields -> a magnetic field will be generated when a wire is looped around an iron nail and is connected to a circuit", " " ]

[ "moving a coil of wire in the magnetic field generates electrical current & a metal loop is similar to a coil of wire -> moving a metal loop in the magnetic field generates electrical current", " " ]

[ "a battery converts chemical energy into electrical energy for powering electrical devices & a radio is a kind of electrical device -> the battery converts chemical energy into electrical energy to power a radio", " " ]

[ "a flashlight is a kind of battery-operated device & battery is the source of electrical energy for battery-operated device -> battery is the source of electrical energy for a flashlight", " electrical devices convert from electrical energy into other forms of energy & a flashlight is a kind of electrical device -> a flashlight converts electrical energy into other forms of energy", " a flashlight converts electrical energy into other forms of energy & a flashlight emits light & a kind of is similar to a form of & light is a kind of energy -> a flashlight converts electrical energy into light energy", " battery is the source of electrical energy for a flashlight & a flashlight converts electrical energy into light energy -> a flashlight converts electrical energy from the battery into light energy", " a flashlight converts electrical energy from the battery into light energy & batteries convert chemical energy to electrical energy -> when a flashlight is used, the energy is changed from chemical energy into electrical energy and then into light energy", " " ]

[ "a flashlight is a kind of battery-operated device & battery is the source of electrical energy for battery-operated device -> battery is the source of electrical energy for a flashlight", " a flashlight is a kind of electrical device & electrical devices convert from electrical energy into other forms of energy -> a flashlight converts electrical energy into other forms of energy", " a flashlight converts electrical energy into other forms of energy & a kind of is similar to a form of & a flashlight emits light & light is a kind of energy -> a flashlight converts electrical energy into light energy", " battery is the source of electrical energy for a flashlight & a flashlight converts electrical energy into light energy -> a flashlight converts electrical energy from the battery into light energy", " a flashlight converts electrical energy from the battery into light energy & batteries convert chemical energy to electrical energy -> when a flashlight is used, the energy is changed from chemical energy into electrical energy and then into light energy", " " ]

[ "a wind turbine converts wind energy into mechanical energy for a generator & a generator converts mechanical energy to electrical energy -> a wind turbine converts wind energy into electrical energy by using mechanical energy", " " ]

[ "hammering an object requires movement & a nail is a kind of object -> hammering a nail requires movement", " hammering a nail requires movement & an example of mechanical energy is an object in motion -> hammering a nail is an example of mechanical energy", " " ]

[ "a light bulb is a kind of electrical device & an electrical device requires electricity to turn on -> a light bulb requires electricity to turn on", " an electric circuit is a vehicle for moving electrical energy from the source to the electrical device & when a switch in a simple series circuit is closed , electricity will flow through the circuit -> when a switch is closed, the electrical energy will flow from the source to the electrical device", " when a switch is closed, the electrical energy will flow from the source to the electrical device & a light bulb is a kind of electrical device -> when a switched is closed, the electrical energy will flow to the light bulb", " when a switched is closed, the electrical energy will flow to the light bulb & electricity is a kind of electrical energy -> when a switch is closed, the electricity will flow to the lightbulb", " a light bulb requires electricity to turn on & when a switch is closed, the electricity will flow to the lightbulb -> when electricity flows to a light bulb , the light bulb will turn on / come on", " " ]

[ "plastic is an electrical insulator & plastic tape is made of plastic -> plastic tape is an electrical insulator", " plastic tape is an electrical insulator & an electrical insulator prevents the flow of electricity -> plastic tape will prevent the flow of electricity", " " ]

[ "light is a kind of energy & sound is a kind of energy & heat is a kind of energy -> heat, light, and sound are all different forms of energy", " " ]

[ "if something converts one kind of energy into other kinds of energy then that something originally stores that energy as the first kind of energy & a firecracker converts chemical energy into sound energy and light energy and heat energy -> the firecracker stores chemical energy as its original energy", " " ]

[ "gas is a kind of state of matter & liquid is a kind of state of matter & heat energy can change the state of matter -> heat energy can change a substance from a liquid to a gas", " heat energy can change a substance from a liquid to a gas & water is a kind of substance -> heat energy can change water from a liquid to a gas", " " ]

[ "heat is a kind of heat energy & heat energy can change the state of matter -> heat can change the state of matter", " heat can change the state of matter & liquid is a kind of state of matter & solid is a kind of state of matter -> heat can change a substance from a solid to liquid", " heat can change a substance from a solid to liquid & melting means a substance changes from a solid into a liquid by increasing heat energy -> heat can cause a solid substance to melt", " heat can cause a solid substance to melt & an ice cube is a kind of solid -> heat can cause the ice cube to melt", " " ]

[ "heat is a kind of heat energy & heat energy can change the state of matter -> heat can change the state of matter", " heat can change the state of matter & liquid is a kind of state of matter & solid is a kind of state of matter -> heat can change a substance from a solid to liquid", " heat can change a substance from a solid to liquid & melting means a substance changes from a solid into a liquid by increasing heat energy -> heat can cause a solid substance to melt", " heat can cause a solid substance to melt & ice is a kind of solid -> heat can cause ice to melt", " heat can cause ice to melt & a car engine is a source of heat -> the heat from a car engine can cause ice to melt", " " ]

[ "heat energy can change the state of matter & heat is a kind of heat energy -> heat can change the state of matter", " heat can change the state of matter & solid is a kind of state of matter & liquid is a kind of state of matter -> heat can change a substance from a solid to liquid", " heat can change a substance from a solid to liquid & melting means a substance changes from a solid into a liquid by increasing heat energy -> heat can cause a solid substance to melt", " heat can cause a solid substance to melt & ice is a kind of solid -> heat can cause ice to melt", " heat can cause ice to melt & the sun is a source of radiation / heat called sunlight -> the heat from the sunlight cause ice to melt", " " ]

[ "an x ray is a kind of electromagnetic wave & electromagnetic energy travels as electromagnetic waves -> x-rays are a kind of electromagnetic energy", " x-rays are a kind of electromagnetic energy & ultraviolet light is a kind of electromagnetic energy -> x-rays and ultraviolet light are both electromagnetic energy", " " ]

[ "a block is a kind of object & mechanical energy exerted by an object can be used to push or pull another object -> mechanical energy exerted by an object can be used to push a block", " mechanical energy exerted by an object can be used to push a block & a person is a kind of object -> a person can exert mechanical energy to push a block", " " ]

[ "pedals are a kind of object & pedalling a bicycle requires moving the pedals in a circular motion & mechanical energy can cause objects to move -> mechanical energy can be used to pedal a bicycle", " " ]

[ "a vehicle is a kind of object & a wagon is a kind of vehicle -> a wagon is a kind of object", " a wagon is a kind of object & rolling is a kind of motion -> a wagon rolling is an example of an object in motion", " a wagon rolling is an example of an object in motion & an example of mechanical energy is an object in motion -> a wagon rolling is an example of mechanical energy", " " ]

[ "sound can occur in an area & a classroom is a kind of area -> sound can occur in a classroom", " sound can occur in a classroom & loud means high in sound energy / sound intensity & sound is a kind of energy -> the sound in a loud class room is an example of high sound energy", " " ]

[ "if an object / something is in the sunlight then that object / that something will absorb solar energy & a sidewalk is located outside -> a sidewalk located outside will absorb solar energy", " a sidewalk located outside will absorb solar energy & absorbing sunlight causes objects to heat -> the sidewalk located outsie will heat", " the sidewalk located outsie will heat & if something heats, it will feel hot -> the sidewalk located outside will feel hot", " " ]

[ "if an object touches something then one is exposed to that something & if a spoon is used to stir a liquid then that spoon is touching that liquid -> if a spoon is used to stir a liquid, then the spoon is exposed to the liquid", " if a spoon is used to stir a liquid, then the spoon is exposed to the liquid & soup is a kind of liquid -> if a spoon is used to stir soup, the the spoon is exposed to the soup", " if a spoon is used to stir soup, the the spoon is exposed to the soup & a metal spoon is used to stir the soup -> the metal spoon is exposed to the soup", " the metal spoon is exposed to the soup & metal is a thermal / thermal energy conductor -> the metal spoon being exposed to the soup is an example of a thermal conductor being exposed to the soup", " a metal spoon is used to stir the soup0 & a pan of soup is heated on a stove -> the pan of soup will become hot", " the pan of soup will become hot & a metal spoon is used to stir the soup1 & soup is a kind of substance -> the pan of soup will become a source of heat", " the metal spoon being exposed to the soup is an example of a thermal conductor being exposed to the soup & the pan of soup will become a source of heat & if a thermal conductor is exposed to a source of heat then that conductor will become hot / warm -> the metal spoon in the soup will become hot", " the metal spoon in the soup will become hot & if heat is transferred to an object , then the object will get hot -> heat in the soup transferring to the metal spoon causes the spoon to become hot", " " ]

[ "sunlight is a kind of light & solar energy is a kind of light -> sunlight is a kind of solar energy", " sunlight is a kind of solar energy & absorbing sunlight causes objects to heat -> absorbing solar energy causes objects to heat", " a glass is a kind of object & a glass contains water & water is a kind of substance -> a glass of water is a kind of object", " a glass of water is a kind of object & if an object / something is in the sunlight then that object / that something will absorb solar energy & a glass of water is in the sunlight -> the glass of water will absorb solar energy", " absorbing solar energy causes objects to heat & the glass of water will absorb solar energy -> the glass of water will heat", " " ]

[ "a sheet of construction paper is a kind of object & black objects absorb the most amount of sunlight -> a black sheet of construction paper will absorb the most amount of sunlight", " " ]

[ "a sweater is a kind of article of clothing & an article of clothing is a kind of object -> a sweater is a kind of object", " a sweater is a kind of object & if an object is black then that object absorbs all visible light / heat -> a black sweater will absorb all visible light", " " ]

[ "blue is a kind of color & dark means dark in color -> dark blue is dark in color", " dark blue is dark in color & as lightness in color of an object increases , the ability of that object to reflect light will increase & white is light in color -> white colored object will reflect more light than the dark blue object", " white colored object will reflect more light than the dark blue object & there is a white t-shirt & there is a dark blue t-shirt & t-shirt is a kind of object -> the white t-shirt will reflect more light than the dark blue t-shirt", " the white t-shirt will reflect more light than the dark blue t-shirt & if an object reflects more sunlight, than the object is more likely to stay cool -> the white t-shirt is likely to be cooler than dark blue t-shirt", " " ]

[ "a leaf is often green in color & a leaf is a kind of object -> a leaf is a green object", " a leaf is a green object & if an object reflects a light of a certain color then the object appears to be that color -> leaves reflect green color", " " ]

[ "ionizing radiation is harmful to human skin & ultraviolet radiation is ionizing -> ultraviolet radiation is harmful to human skin", " " ]

[ "electromagnetic radiation is arranged in the electromagnetic spectrum by wavelength / frequency & light is a kind of electromagnetic radiation -> light is arranged in the electromagnetic spectrum by wavelength and frequency", " " ]

[ "visible light is a kind of light & light is a kind of electromagnetic wave -> visible light is a kind of electromagnetic wave", " " ]

[ "visible light is a part of the electromagnetic spectrum & visible light can be seen without using equipment -> visible light is the part of electromagnetic spectrum that can be seen without using equipment", " " ]

[ "a frequency of radient energy means a form of radient energy & all ranges of frequencies of radiant energy is called electromagnetic spectrum -> all ranges of forms of radient energy is called the electromagnetic spectrum", " " ]

[ "a particle of light is a kind of object & speed is a property of a wave or an object & light is a kind of wave -> speed is a property of the light wave and a particle of light", " light is a kind of wave & frequency is a property of a wave / a particle of light / an event -> frequency is a property of the light wave and a particle of light", " speed is a property of the light wave and a particle of light & frequency is a property of the light wave and a particle of light -> speed and frequency can be used to describe the properties of a light wave and a particle of light", " " ]

[ "a girl shines a flashlight on a mirror & a flashlight emits light -> when a girl shines a flashlight on a mirror, light will shine on the mirror", " when a girl shines a flashlight on a mirror, light will shine on the mirror & a mirror reflects light -> when a girl shines a flashlight on a mirror, the light will be reflected by the mirror", " when a girl shines a flashlight on a mirror, the light will be reflected by the mirror & if an object reflects light toward the eye then that object can be seen -> if the mirror reflects light toward another girl's eye, then the other girl will see the light", " " ]

[ "white is a kind of color & a shirt is a kind of object -> a white shirt is white in color", " a white shirt is white in color & if an object is white then that object reflects all visible light -> a white colored shirt will reflect all visible light", " " ]

[ "light is a kind of wave & when light hits a reflective object , that light bounces off that object -> when light wave hits a reflective object, the light wave bounces off that object", " when light wave hits a reflective object, the light wave bounces off that object & reflection is when a wave bounces off a surface and travels in the opposite direction relative to the angle of incidence -> when light wave hits a reflective object, the light wave is reflected", " when light wave hits a reflective object, the light wave is reflected & a mirror is a kind of reflective object -> when light wave hits a mirror, the light wave will be reflected", " " ]

[ "absorbing sunlight causes objects to heat & if something is outside during the day then that something will receive sunlight -> if something is outside during the day then that something will be heated by absorbing sunlight", " if something is outside during the day then that something will be heated by absorbing sunlight & cars are parked outside during the day -> cars parked outside will be heated by absorbing sunlight", " cars parked outside will be heated by absorbing sunlight & sunlight is a kind of light -> cars parked outside will be heated by absorbing light", " a shiny aluminum screen is placed on the car & shiny things reflect light -> a shiny aluminum screen on a car will reflect light away from the car", " cars parked outside will be heated by absorbing light & a shiny aluminum screen on a car will reflect light away from the car & if light is reflected, then the light is not absorbed -> cars with a shiny aluminum screen will reflect the sunlight and not absorb the sunlight", " cars with a shiny aluminum screen will reflect the sunlight and not absorb the sunlight & if an object does not absorb the sunlight, then the object can stay cool -> cars with a shiny aluminum screen can stay cool by reflecting the sunlight", " " ]

[ "seeing requires light & light is a kind of energy -> seeing requires light energy", " seeing requires light energy & if something is required for something else then that something allows that something else -> light energy allows things to be seen", " light energy allows things to be seen & a student can see the specimen through a microscope -> the light energy allows the student to see the specimen through the microscope", " " ]

[ "reflection is a kind of property & reflection is when particles bounce off a surface & reflection is when a wave bounces off a surface and travels in the opposite direction relative to the angle of incidence -> both particles and waves have the property of reflection", " both particles and waves have the property of reflection & reflection is a property of light -> light can be seen as both particles and waves", " " ]

[ "light reflecting off of an object causes that object to be visible to the observer & if an object reflects more light then that object is more easily seen -> the object will be seen easier if it reflects more light", " " ]

[ "a ballon has a shiny metallic appearance & a balloon is a kind of object -> a shiny metallic balloon is a kind of object", " a shiny metallic balloon is a kind of object & shiny objects reflect light -> the shiny metallic balloon is an object that reflects light", " the shiny metallic balloon is an object that reflects light & light reflecting off of an object causes that object to be visible to the observer -> the shiny metallic balloon is visible because it reflects light", " " ]

[ "more water droplets are present in the air after the rain & light refracts when it passes through water droplets -> light is more easily to be refracted after the rain", " light is more easily to be refracted after the rain & refracting light causes light to split into different colors -> light is more easily to be split into different colors after the rain", " light is more easily to be split into different colors after the rain & a rainbow is formed by refraction of light by splitting light into all different colors -> a rainbow is more easily to be formed after the rain through light refraction", " a rainbow is more easily to be formed after the rain through light refraction & sunlight is a kind of light -> sunlight and rain can cause a rainbow", " " ]

[ "refraction is when light bends & refraction of light can split light into lights of different color -> refraction is when light bends and is split into lights of different color", " refraction is when light bends and is split into lights of different color & the rainbow is made of all different colors in visible light -> a rainbow is formed by refraction of light by splitting light into all different colors", " " ]

[ "a prism refracts light & refracting sunlight / light causes sunlight / light to split into different colors -> a prism can refract light and split the light into different colors", " a prism can refract light and split the light into different colors & white light is made of all colors of visible light combined -> a prism can refract white light and split the light into all colors of visible light", " " ]

[ "a rainbow is formed by refraction of light by separating light / splitting light into all different colors & sunlight is made of all colors in the rainbow -> the refraction of sunlight into all different colors forms a rainbow", " " ]

[ "a light wave enters a denser medium & if a medium is denser , then the medium will be another medium -> the light wave enters another densesr medium", " the light wave enters another densesr medium & refraction is when light passes from one medium to another medium -> the light is refracted when it enters another denser medium", " " ]

[ "a prism refracts light & a prism is made of glass -> a glass prism refracts light", " " ]

[ "scattering light decreases visibility & water droplets scatter light -> water droplets scattering light decreases the visibility", " clouds are made of water vapor / rain droplets & fog is a kind of stratus cloud on the ground -> fog is made of rain droplets", " fog is made of rain droplets & rain droplets are a kind of water droplets -> fog is made of water droplets", " water droplets scattering light decreases the visibility & fog is made of water droplets -> water droplets in the fog scattering light decreases the visibility", " " ]

[ "x-rays can pass through some parts of the body & doctors sometimes need an image of inside the body to diagnose -> x-rays can be used by the doctors to see inside of the body", " the medical industry uses medical technology & doctors belong to the medical industry -> doctors use medical technology", " x-rays can be used by the doctors to see inside of the body & doctors use medical technology -> x-rays are used in medical technology", " " ]

[ "mechanical energy is used to move something by animals & joules j are an si unit used for measuring mechanical energy -> the mechanical energy used to move something by animals is measured in joules", " " ]

[ "a ball is a kind of object & rolling is a kind of motion -> a ball rolling is an example of object in motion", " a ball rolling is an example of object in motion & an example of an object with kinetic energy is an object in motion -> a ball rolling is an example of kinetic energy", " " ]

[ "a ball is a kind of object & rolling is a kind of motion -> a ball rolling is an example of an object moving", " a ball rolling is an example of an object moving & moving changes potential energy into kinetic energy and heat energy -> a ball rolling will change the potential energy of the ball into kinetic energy and heat energy", " a ball rolling will change the potential energy of the ball into kinetic energy and heat energy & down the hill is a kind of direction & a metal ball is a kind of ball -> a metal ball rolling down the hill will change the potential energy into kinetic energy and heat energy", " " ]

[ "potential energy of an object is determined by the mass and the height of the object & a roller coaster is a kind of object -> potential energy of the roller coaster is determined by its mass and its height", " potential energy of the roller coaster is determined by its mass and its height & the height of a roller coaster car is known -> if we know the mass of the roller coaster, then we can determine the potential energy of the rollar coaster", " " ]

[ "a soccer ball is going upward after being kicked & going upwards means increasing the altitude -> the altitude of the soccer ball is increasing", " a ball is a kind of object & a soccer ball is a kind of ball -> a soccer ball is a kind of object", " the altitude of the soccer ball is increasing & a soccer ball is a kind of object & as the altitude of an object increases , the potential energy of the object will increase -> the potential energy of the soccer ball will increase", " " ]