Halons And Cfcs Both

Question: Air pollution affects everyone equally. T o F

Answer: F

Question: The ozone layer helps to sustain terrestrial life by __________.

1. absorbing incoming UV radiation

b. keeping levels of ozone in the troposphere low

c. maintaining the Earth’s temperature structure

d. all of the above

Answer: D

Question: Which of the following is a health risk associated with ground-level ozone?

1. cataracts

b. skin cancer

c. respiratory illness

d. all of the above

Answer: C

Question: Acid rain occurs when sulfur dioxide in the atmosphere is oxidized in the presence of nitrogen dioxide. Acid rain is an example of _______.

1. a primary pollutant

b. a secondary pollutant

c. a tertiary pollutant

d. none of the above

Answer: B

Question: Ozone is both helpful and harmful to life on Earth. T o F

Answer: T

Question: Halons and CFC’s both _______.

1. inhibit ozone formation

b. cause ozone formation in the troposphere

c. destroy ozone in the stratosphere

d. cause excess ozone formation in the stratosphere

Answer: C

Question: Which of the following is not a possible cause for air pollution?

1. volcanoes

b. industry

c. combustion

d. none of the above

Answer: B

Question: The _______ is responsible for absorbing the most UV radiation.

1. troposphere

b. stratosphere

c. mesosphere

d. thermosphere

Answer: B

Question: Which of the following is a possible consequence of ozone layer depletion on living organisms?

1. increased exposure to ground-level ozone

b. decreased levels of ultraviolet radiation in the troposphere

c. increased levels of ultraviolet radiation absorption in the stratosphere

d. none of the above

Answer: A

Question: Air pollution only occurs as a result of human activity. T o F

Answer: F