All energy that we use comes from another energy . Prove this with two examples .
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We use it every day, we have it in our bodies and some of it comes from other planets! Energy can never be made or destroyed, but its form can be converted and changed. For example, the chemical energy we get from our food turns into kinetic and thermal energy (see below) when we walk and sound energy when we shout.
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We use it every day, we have it in our bodies and some of it comes from other planets! Energy can never be made or destroyed, but its form can be converted and changed. For example, the chemical energy we get from our food turns into kinetic and thermal energy (see below) when we walk and sound energy when we shout.
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