1. Gases in the Atmosphere absorb Radiation
Unit A Chapter 1 Section 3

2. What happens to most of the sunlight that travels through the earth’s atmosphere?
Reaches Earth’s surface

3. List four ways the atmosphere affects light?
absorb it
reflect it
let it pass through
emit or give off light (not visible light though)

4. How is ultraviolet radiation different than visible light?
It has more energy

5. What can ultraviolet radiation do?
Cause sunburn and other types of damage

6. How is infrared radiation different than visible light?
It has less energy

7. What can infrared radiation do to objects that absorb it?
Usually warms them

8. What is an ozone molecule made of?
Three atoms of oxygen (O3)

9. Where is the ozone layer found?
Stratosphere

10. What form of radiation does the ozone layer absorb?
Ultraviolet (UV) radiation

11. List three things that too much ultraviolet radiation can cause.
Increased sun burn
Skin cancer
Eye damage

12. How do greenhouse gases help keep Earth warm?
Absorb and emit infrared radiation, which keeps energy in Earth’s system for awhile

13. Name four greenhouse gases.
Carbon dioxide
Methane
Nitrous oxide
Water vapor

14. In what layer are most greenhouse gases found?
Troposphere

15. *Greenhouse Effect

16. In time, what happens to all of the energy that enters Earth’s atmosphere?
It returns to outer space

17. *Greenhouse Gases help keep Earth Warm, but too much of a good thing can be bad.
Carbon dioxide
Water vapor
Methane
Nitrous oxide
The burning fossil fuels is producing greenhouse gases faster than they can be removed by natural processes.
This may be responsible for an increase in the average temperature over the past century – Global Warming

18. What would happen if the energy did not return to outer space?
The Earth would grow warmer and warmer