1. Molecules are tiny invisible particles.
2. As air begins to cool, the space between molecules begins to contract (to shrink).
3. Moving gasses (like hot air) can create movements in other objects.
4. Air pressure on Earth is always changing.
5. Another name for “squeezing together” is contracting.
6. When you pushed on the balloon, it wouldn’t go into the jar because the air in the bottle pushed back.
7. The purpose of the straw in this activity was to allow air into the jar to equalize the pressure.
8. When the fire went out and the balloon popped into the jar, there was more force outside the jar than inside.
9. The pushing and pulling force of air is called air pressure.
No comments:
Post a Comment