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Why does air expand?

Cloze Test Worksheet

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Country Flag Australia

Date Shared: 29 March 2016

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Air molecules collide into the balloon with the same energy inside and outside the balloon. When the bottle is heated, the air molecules inside start moving faster. These molecules now collide into the balloon with more energy resulting in increased pressure. The increased pressure causes the balloon to expand.

collide energy balloon heated inside molecules energy pressure expand

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29 March 2016

CathL Author Country Flag Australia

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