Across
- 2. where two air masses meet
- 5. 4000 degrees, 250,000 times as luminous as our sun
- 7. heat transfers from one object to another
- 10. in the stratosphere blocks UV radiation
- 11. light and heat from the Sun
- 12. caused by the Earth's tilted axis
- 13. where we live and where weather happens
- 14. includes the Sun, our planets, and asteroids
Down
- 1. hot air rises and cool air sinks
- 3. a main sequence star
- 4. dark areas of the moon
- 6. water vapor becomes a liquid
- 8. mostly hydrogen and helium
- 9. liquid water becomes a gas or water vapor