unit 9

Question 1

stratosphere contains how much ozone

Answer 1

97%

Question 2

what does uv radiation create

Answer 2

atomic oxygen

Question 3

UVA

Answer 3

closest to blue light, causes skin tanning

Question 4

UVB

Answer 4

associated with skin cancer

Question 5

UVC

Answer 5

largely responsible for the formation of ozone

Question 6

what is ozone

Answer 6

highly reactive molecule that is constantly being formed and broken down in the stratosphere

Question 7

what affect to chloroflourocarbons do to the ozone layer

Answer 7

degrade it when they reach the stratosphere

Question 8

3 effects of ozone depletion

Answer 8

• reduction in crop production
• increases in skin cancer and skin damage from sun
• cooling of the stratosphere

Question 9

How do CFCs enter the atmosphere

Answer 9

propellants in aerosol sprays, refrigerants in refrigerators, air conditioners, solvents in various industrial processes

Question 10

explain the greenhouse affect

Answer 10

greenhouses gases absorb reflected infrared radiation (heat) and trap heat in the atmosphere

Question 11

what is the largest reservoir for carbon dioixide

Answer 11

ocean