down 2.
Lightning is a form of ____ energy.
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down 4.
A form of energy that results from the attraction of objects that are made of iron.
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down 6.
The energy that is stored within atoms.
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down 7.
A form of energy that results from the movement of machine parts.
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down 8.
A measure of energy that is used for measuring the amount of energy in food.
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down 9.
Fuels such as coal and oil that can be used only once.
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down 10.
Any type of material that stores energy and can be burned to supply heat.
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down 14.
The basic unit of energy that scientists use.
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down 15.
Earth gets most of its energy from this form of energy.
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down 18.
A form of energy that travels as waves through the air and some solids and liquids.
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down 19.
A form of energy that travels as waves from the sun to Earth.
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down 21.
Chemical energy is stored in the ____ of molecules.
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across 1.
A form of energy that is used in homes and is produced by the movement of electrons.
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across 3.
The energy stored in compressed springs is known as ____ potential energy.
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across 5.
A storage of energy invented by humans and that is filled with chemicals.
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across 11.
A type of potential energy that is made from fossil fuels.
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across 12.
The burning of wood releases this form of energy. This energy is created as a result of the movement of atoms.
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across 13.
Animals store their excess energy in this form. They can use this later on if they do not have enough energy.
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across 16.
One of the gases released into the air when fossil fuels burn. (2 words)
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across 17.
A type of fuel formed from the remains of plants or sea creatures millions of years ago.
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across 20.
Fuels such as the wind and sun that can generate power without being used up.
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across 22.
Humans get their energy from this.
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across 23.
Batteries and plants store this kind of energy.
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