Across
- 2. type of front where fast-moving cold air forces warm air up quickly
- 8. layer that has the highest air pressure
- 9. type of precipitation that freezes when it hits the cold ground
- 11. instrument that measures air pressure
- 12. type of pressure that results in clear skies
- 14. instrument that measures relative humidity
- 15. storms that form over warm, humid oceans
Down
- 1. meteors start to break up in this layer
- 3. makes up 78% of our atmosphere
- 4. as altitude increases, air pressure ____
- 5. layer the ozone is found
- 6. funnel-shaped cloud that touches the ground
- 7. pressure system that brings clouds and storms
- 10. satellites orbit in this upper layer
- 13. lines that join areas of the same air pressure