Across
- 4. a type of wave that moves through the vacuum of space
- 5. the weight of air pushing down on an area
- 8. a form of heat transfer that occurs in fluids
- 10. this layer of the atmosphere is the coldest
- 12. envelope of gases held to Earth by the force of gravity
- 13. either a gas or a liquid
- 14. most abundant gas in Earth's atmosphere
- 15. a gas that there is only a small amount of in the atmosphere
- 16. the layer of the atmosphere that experiences weather
- 18. this layer protects from ultraviolet radiation
- 19. a form of heat transfer that require objects touching
- 21. the ionosphere is the lower layer of this main layer in the atmosphere
- 22. a type of electromagnetic radiation that can be felt as heat
- 24. an example of a trace gas in Earth's atmosphere
- 25. second most abundant gas in the atmosphere
Down
- 1. the ozone layer is found in this layer of the atmosphere
- 2. how light reacts when it hits particles in the atmosphere
- 3. a type of electromagnetic radiation that humans see as colors
- 6. a type of electromagnetic radiation that causes sunburns
- 7. the distance between two peaks on a wave
- 9. the air above you that extends all the way through space
- 11. a form of heat transfer through electromagnetic waves (infrared or ultraviolet)
- 17. the hottest layer of the atmosphere
- 20. an instrument used to measure air pressure
- 23. the amount of mass in a given volume