Wednesday, February 26, 2014

Destruction of the Ozone Layer

2.26.2014

Ozone depletion NASA


Ozone depletion United Nations

Quiz:

1. Name the layers of the atmosphere from closest to the earth to farthest away (remember: they serve me tacos everday)

2. In which layer of the atmosphere does weather occur?

3. In which layer of the atmosphere is the ozone layer found?

4. What does the ozone layer do?

5. Where do CFC's come from, and how are they destroying the ozone layer?

6. Name three greenhouse gases (GHG).

7. How do GHG's naturally maintain climate?

8. Why are GHG's causing climate change?

9. What does the ice core record of climate indicate?

10.  Which protocol was passed to reduce CFC's?

11. Which protocol was passed to reduce CO2 emissions?

12. Which two countries did not sigh the Kyoto Protocol?

Ozzy Ozone

   47.   A layer of ozone in the lower stratosphere reduces the sun's harmful UV radiation by how much?
a.
95%
b.
63%
c.
49%
d.
33%
e.
20%



   48.   The effects of ozone depletion on humans includes all of the following, except
a.
more cataracts
b.
suppression of immune system
c.
more brain cancers
d.
worse sunburn
e.
more skin cancers



   49.   Chlorofluorocarbons are
a.
nontoxic
b.
corrosive
c.
odorous
d.
flammable
e.
expensive



   50.   Researchers Rowland and Molina, in 1974, came to all of the following conclusions about CFCs except:
a.
CFCs remain in the atmosphere once they are injected there
b.
CFCs combine with water vapor and are responsible for acid rain
c.
after 11-20 years CFCs rise into the stratosphere
d.
once in the stratosphere CFCs break ozone down
e.
each CFC molecule can last in the stratosphere from 65 to 385 years


   51.   Which of the following is not a precaution to follow in order to reduce exposure to UV radiation?
a.
do not use tanning parlors or sun lamps
b.
limit exposure to UV radiation to overcast days
c.
do not expose yourself to the sun if you are taking antibiotics or birth control pills
d.
use sunscreen with a protection factor of at least 15
e.
use UV-A and UV-B protective clothing and sunglasses



   52.   Chemicals capable of destroying ozone include all of the following, except
a.
chlorofluorocarbons
b.
formaldehyde used as a preservative
c.
halons in fire extinguishers and crop fumigants
d.
carbon tetrachloride used as a solvent
e.
methyl bromide used as a fumigant



   53.   If all of the ozone-depleting substances were banned tomorrow, it would take about ____ years for earth to recover to pre-1950 levels.

a.
25
b.
50
c.
75
d.
100
e.
125

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