4.4 climate change

Question 1

4 greenhouse gases

Answer 1

1. carbon dioxide (CO₂)
2. water (H₂O)
3. methane (CH₄)
4. nitrous oxide (N₂O)

Question 2

describe the greenhouse effect

Answer 2

shortwave radiation from the sun (UV, visible light) is absorbed by Earth’s surface. this energy is transformed into longwave radiation (heat/infrared). Most is absorbed by greenhouse gases in the lower atmosphere, resulting in warming.

Question 3

fill out greenhouse gas diagram

Answer 3

see ipad

Question 4

why is earth’s atmosphere warmer than outer space?

Answer 4

greenhouse gases trap long-wave infrared radiation (heat) on Earth’s surface and reflect it back to the surface

Question 5

What spurred the initial rise of atmospheric carbon dioxide levels since the 1800’s?

Answer 5

the industrial revolution

Question 6

shortwave radiation

Answer 6

• short wavelength
• higher energy
• visible and UV light

Question 7

longwave radiation

Answer 7

• longer wavelength
• lower energy
• infrared (heat) radiation

Question 8

calcification

Answer 8

a process in which marine organisms build an exoskeleton or shell out of calcium carbonate; the deposit of calcium which helps facilitate the building of coral reefs.