Climate

Question 1

Concern about the greenhouse effect stems from

Answer 1

Increases in atmospheric carbon-dioxide levels

Question 2

The melting of sea ice

Answer 2

Will not affect sea level; melting of land ice will cause a rise in sea level

Question 3

The albedo of the earth

Answer 3

None correct

Question 4

Possible sources of methane from human activities include all of the following except

Answer 4

Cornfields

Question 5

Indicators of past global air or water temperatures include all of the following except

Answer 5

Volcanic ash deposits in glacial ice

Question 6

Seattle, Washington is located at 47.5N latitude and Boston, Massachusetts is located at 42.22N latitude, so Seattle is farther north than Boston. Both cities border oceans, the Pacific Ocean in the case of Seattle and the Atlantic Ocean in the case of Boston. Both cities are in close proximity to a segment of the global thermohaline circulation system, the Japanese Current for Seattle and the Gulf Stream for Boston. Seattle, though, rarely experiences winter snowfall, whereas Boston often does. Why?

Answer 6

A and C Combined

Question 7

An El Nino event is likely to be associated with

Answer 7

Changes in paths and intensities of Pacific storms

Question 8

This gas is a more efficient greenhouse gas in comparison to carbon dioxide, but it has a far lesser presence in earth’s atmosphere

Answer 8

Methane

Question 9

Rising sea level due to global warming will

Answer 9

Decrease the acreage of coastal wetlands due to saltwater intrusion

Question 10

The Arctic ice cap is more vulnerable to melting due to warming than is the Antarctic ice cap because

Answer 10

Liquid seawater is beneath the Arctic ice cap, so warmer water can cause melting from below the ice in addition to melting on the surface due to atmospheric warming.