New Jersey NJSLA Science Grade 8 Practice Questions - New Jersey Student Learning Assessments - Science Grade 8 Exam

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A sealed balloon is placed in a freezer. What happens to the motion of the gas particles inside the balloon as it cools?

The particles slow down because they have less thermal energy. The particles stop moving completely. The particles speed up because cold makes them move more. The particles move faster to generate heat.

Correct Answer:

The particles slow down because they have less thermal energy.

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