Across
- 4. Energy that travels across distances as certain types of waves
- 7. Gases, such as carbon dioxide and methane, that absorb and give off infrared radiation as part of the greenhouse effect
- 8. Harmful materials added to the air that can cause damage to living things and the environment
- 10. The combination of smoke and fog; a type of air pollution that occurs when sunlight causes unburnt fuels, fumes, and other gases to react chemically, often seen as a brownish haze.
- 13. The outer layer of gases of a large body in space, such as a planet or star; the mixture of gases that surrounds the solid Earth; one of the four parts of the Earth system
- 14. A property of matter representing the mass per unit volume
- 15. The transfer of heat energy from one substance to another through direct contact without obvious motion
Down
- 1. Radiation of lower frequencies than visible light
- 2. The distance above sea level
- 3. The transfer of energy from place to place by the motion of heated gas or liquid
- 5. fuels Fuels formed from the remains of prehistoric organisms that are burned for energy
- 6. Tiny particles or droplets, such as dust, dirt, and pollen, that are mixed in with air
- 9. A gas molecule that consists of three oxygen molecules that helps to block harmful UV radiation from reaching earth's surface
- 11. The process by which certain gases in a planet's atmosphere absorb and emit infrared radiation, resulting in an increase in surface temperature
- 12. Radiation of higher frequencies than visible light, which can cause sunburn and other types of damage