Question

ozone depletion practice questions

1. addressed the issue of stratospheric ozone depletion

a. endangered species act
b. kyoto protocol
c. montreal protocol
d. national environmental policy act
e. wilderness act

1. considered harmful in the troposphere but beneficial in the stratosphere:

a. sulfur dioxide
b. lead
c. ozone
d. lead

1. which of the following best describes the importance of ozone in the stratosphere to life on earth?

a. ozone reflects x - rays from the sun back into space.
b. ozone absorbs most of the ultraviolet radiation from the sun.
c. ozone helps to moderate surface temperature by absorbing co2 and ch4.
d. ozone increases mutation rates and accelerates evolution in a variety of species.

1. stratospheric ozone depletion is most likely to result in which of the following?

a. increased growth of food crops due to increasing amounts of ultraviolet radiation
b. extended grazing season for cattle
c. disruption of photosynthesis in plants
d. increased movement of the human population toward equatorial regions

1. ozone (o3) is an atmospheric trace gas that occurs naturally in the stratosphere. it is also formed as a consequence of human activity in the troposphere, immediately above earths surface. the location of ozone in the atmosphere determines whether the gas protects or damages the environment.

a. identify the type of solar radiation that is absorbed by stratospheric ozone, and describe one human health benefit that results from the absorption of this solar energy.

Explanation:

1. The Montreal Protocol addressed the issue of stratospheric ozone depletion.
2. Ozone in the stratosphere is beneficial as it absorbs most of the ultraviolet radiation from the Sun.
3. Stratospheric ozone depletion is most likely to result in increased growth of food crops due to increasing amounts of ultraviolet radiation is incorrect. Increased UV - radiation can damage plants. Extended grazing season for cattle is not a direct result. Disruption of photosynthesis in plants can occur due to UV - radiation increase. Increased movement of the human population toward equatorial regions is not a direct consequence.
4. Ozone is not formed as a consequence of human activity in the troposphere immediately above Earth's surface in the way described in the question. Ozone in the stratosphere is formed naturally.
5. The absorption of solar radiation by stratospheric ozone provides protection from harmful UV - radiation which can cause skin cancer and other health issues. One human health benefit is reduced risk of skin cancer.

Answer:

1. c. Montreal Protocol
2. c. Ozone absorbs most of the ultraviolet radiation from the Sun.
3. b. Disruption of photosynthesis in plants
4. None of the above options correctly describe natural ozone - formation in the stratosphere.
5. Reduced risk of skin cancer (from the absorption of harmful UV - radiation by stratospheric ozone)