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Energy Summary

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Complete this fill in the blanks activity on energy.

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Âge recommandé: 14 ans
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Australia

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Energy Summary

Complete this fill in the blanks activity on energy.

Belinda Schirmer
1

gravitational work move gravitational kinetic

Energy is defined as the ability to do . The energy of an object can also give objects the potential to , or it can create sound , heat or light . All objects that are moving have energy . The faster an object moves , the more of this type of energy it has . Objects at a height above the ground have potential energy because the Earth ? s force will cause them to fall to Earth .

2

conservation incandescent chemical heat

The energy in household batteries is an example of potential energy that powers many household devices . The law of of energy tells us that when energy is transferred to another object or transformed to another type , the total amount of energy stays the same . In light globes electricity passes through a fine tungsten filament in the globe causing it to glow red hot . The light is a useful form of energy but the is a wasted form of energy .

3

insulators Sound currents radiation conductors

Metals are generally good of heat ; materials like glass , plastic and wood do not conduct heat as well as metals . Materials that conduct heat poorly are called . Convection is the movement of heat through a liquid or gas . Sea breezes are often created by convection along coastal areas . Devices such as thermos flasks are designed to act as insulators and control the transfer of heat . A thermos flask limits the movement of heat by conduction , convection and . energy is often produced along with heat in some energy conversions .