5.1 Different forms of energy

Sound is produced by the ____________ of an object.

Foods and fuels contain ____________ energy.

Candles, table lamps and torches give out ___________ energy which enables us to see things.

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The sun gives out ____________ and light energy.

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A moving object has ____________________ energy.

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Heavier moving objects has ______________ kinetic energy than lighter moving objects.

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A moving object has ______________ when its speed increases.

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When the handles are squeezed, ____________________ energy is stored in the spring of the pilers.

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All electrical appliances need ____________________ energy to work.

The unit of energy is Joule. The symbol of the unit is ___.