Weather

4. How close or far apart something's particles are.
5. A tiny piece of matter that makes up a substance, and moves due to Kinetic Energy.
7. The layers of gas and air on top of our planet.
9. This is what provides heat and causes weather to happen.
10. A temperature scale used to measure heat, and used in the USA.
13. What scientists use to measure temperature and humidity high in the air.
15. When a liquid turns into a gas due to heat.
16. When hot air rises or sinks due to density. How heat travels in fluids.
17. When a gas turns into a liquid due to cold.

1. When water changes from one form to another in the ground, sky, recycling water on Earth.
2. A tool used to measure humidity and temperature.
3. Any water that falls from the sky.
6. When matter changes from one form to another due to heat or pressure.
8. Particles that are less dense and hot will do this.
9. Particles that are more dense and cold will do this.
11. A measure of how much water is in the air (0-100%)
12. How high something is above the ground, measured in feet.
14. A tool used to measure temperature.