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| The ability to cause change. |
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| A form of energy that people make by using other kinds of energy found in nature, such as wind, moving water, oil, or coal. |
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| A source of energy made over millions of years from the bodies of dead plants and animals. |
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| A type of stored energy that we use to power flashlights and radios. |
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| Objects that move quickly back and forth producing sound. |
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| The path electricity follows from a battery through a bulb and back to the battery. |
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| The energy that moves the particles in matter. We feel this energy as heat. |
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| The movement of thermal energy from one place to another. |
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| The force between two moving objects that tries to keep the objects from moving freely. |
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| Thermal energy that moves without touching anything. |
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| A tool we use to measure how hot or cold something is. |
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| The movement of thermal energy from one object to another where they touch. |
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| A material in which thermal energy cannot move easily. |
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| Movement of thermal energy through liquids in gases. |
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