Across
- 3. Gases that absorb heat in the atmosphere.
- 5. Water in its gaseous form.
- 7. The force with which air pushes against Earth's surface.
- 8. The forward edge of a moving mass of warm or cool air; the place where two air masses meet.
- 10. To change from vapor or gas to liquid.
- 11. The long-term average or usual weather conditions for an area.
- 12. The height above any given point, especially above sea level.
- 13. A push applied over a surface by something in contact with that surface.
- 16. Invisible, high-energy rays from the sun that can damage unprotected eyes and skin; also called ultraviolet rays.
- 18. A layer of the atmosphere above the mesosphere, extending between about 200 km and about 500 km above the surface of the Earth.
- 20. The air that surrounds the Earth.
Down
- 1. The layer of the atmosphere extending from Earth’s surface to the stratosphere. There is where weather happens.
- 2. The air conditions outside at a certain time and place.
- 4. A layer of atmosphere; beginning about 16 km up, in which temperatures are more or less uniform and clouds are rare.
- 5. A temperature that is a measure of how cold the air feels to human skin, taking into account the chilling effect of the wind, as well as the actual air temperature.
- 6. An unstable form of oxygen comes in contact with UV rays; ozone forms a protective layer in the stratosphere.
- 9. The layer of Earth's atmosphere just about the stratosphere,extending to about 80 km above the surface of Earth.
- 14. To change into a gas or vapor.
- 15. The force with which air pushes against the Earth’s surface.
- 17. A substance, often a waste material such as smoke or dust,that spoils an environment.
- 19. An instrument for measuring air pressure.