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21 Cards in this Set
- Front
- Back
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a microwave changes electric energy into ? |
radiant energy |
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energy can be transformed from one form into another or transferred from one region to another, but energy cannot be created or destroyed |
law of conservation |
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force that resists the sliding of two surfaces that are touching |
friction |
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a microwave oven changes electrical energy to ?
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radiant energy |
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the changes from electrical energy to radiant energy to thermal energy are called energy ? |
transformation |
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when you throw a ball upward, the ball has the greatest speed and the most ______ when it first leaves your hand |
kinetic energy |
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as the ball reaches its highest point, the ball gains its greatest ________ energy |
potential |
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as the ball moves downward, _________ energy decreases and ________ energy increases |
potential. Kinetic |
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as you pedal a bicycle you do _________ and transfer _______ to the bicycle |
work. energy |
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because of ___________ between moving parts of a bicycle, come of the work you do changes to ___________ |
friction. Thermal |
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one way to reduce friction is to apply a __________ to surfaces that rub against each other |
lubricant |
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when you apply brakes on a bicycle, the bicycles _________ energy is not destroyed, instead the bicycles ______ is transformed into thermal energy. |
mechanical. mechanical |
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the _______ amount of energy stays the same |
total |
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you use _______ energy for cooking and heating |
thermal |
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gas stoves and furnaces change _______ energy from natural gas into thermal energy |
chemical |
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during photsynthesis, plants transform _______ energy from the sun into chemical energy for food |
radiant |
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your body changes the chemical energy stored in food into _________ energy as you move and into ___________- energy, which keeps your body temperature high |
kinetic. thermal |
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a television transforms _______ energy into sound energy and _______ energy |
electrical. radiant |
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many devices you use every day are powered by __________ energy |
electric |
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when energy changes form, some _______ energy is always released. scientists often refer to this energy that cannot be used as ________ |
thermal. waste energy |
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cars transform most of the chemical energy in gasoline into ________ energy |
waste energy |
