Answers

2016-01-15T14:03:32+08:00
The size of the balloon becomes smaller because cold temperature causes the elasticity of balloon to pull itself back together. (Because, when a balloon is exposed in a high temperature, it pops because heat stretches the balloon.)
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2016-01-16T21:32:16+08:00
The size of the balloon will decrease as the temperature decreases because the air inside will contract or will move closer to each other
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