Science, Chapter 4, Section 4

Question 1

How much as troposphere temperature risen in past 120 years?

Answer 1

0.5 C

Question 2

What is the Greenhouse Effect?

Answer 2

The process by which gases in the earth’s atmosphere trap solar energy.

Question 3

What are the Green House gases on the earth?

Answer 3

water vapor, carbon dioxide, methane

Question 4

What human activities increase greenhouse gas? which one?

Answer 4

burning wood, coal, oil, and natural gases increases carbon dioxide.

Question 5

In addition to greenhouse effect, what else might increase earth temperature?

Answer 5

increase in solar energy output.

Question 6

What is an advantage of global warming?

Answer 6

Cold areas could become farmland.

Question 7

What bad thing could global warming do to farm land?

Answer 7

turn it into a dust bowl due to lack of water.

Question 8

What bad thing could global warming do to coastlines?

Answer 8

Hurricanes (stronger storms) and flooding.

Question 9

What good thing does the ozone layer do?

Answer 9

Absorbs harmful UV rays from the sun.

Question 10

What was the main cause of ozone depletion?

Answer 10

CFC’s (chlorofluorocarbons)

Question 11

How do CFC’s destroy ozone?

Answer 11

CFC’s turn into chlorine with turns ozone into oxygen.