Glacier Quiz

A(n) ________ is an irregular, usually thin till layer laid down by a retreating glacier. A) outwash blanket B) ground moraine C) terminal moraine D) kame sheet

B) ground moraine

During the most recent ice age, glaciers covered about ________ percent of Earth's land area. A) 30 B) 3 C) 50 D) 10

A) 30

Desert pavement is the result of ________. A) deflation B) erosion by running water C) abrasion by windblown sand D) intense chemical weathering

A) deflation

A ________ cross-valley profile is typical of canyons and valleys eroded and deepened by alpine or valley glaciers. A) V B) U C) Y D) S

B) U

Which process occurs where a glacier enters the sea? A) surging B) calving C) kaming D) drowning

B) calving

Where is the world's largest ice sheet located today? A) Greenland B) Russia, Siberia C) Antarctica D) Iceland

C) Antarctica

Which one of the following applies to a valley glacier that lengthens (extends its terminus downslope) over a period of many years? A) accumulation and wastage are about equal B) wastage exceeds accumulation C) accumulation exceeds wastage D) none of the above

C) accumulation exceeds wastage

Which one of the following is NOT true of glaciers? A) originate on land B) show evidence of past or present flow C) exist only in the Northern Hemisphere D) form from the recrystallization of snow

C) exist only in the Northern Hemisphere

Desert and steppe lands cover about what percentage of Earth's land area? A) 10% B) 66% C) 3% D) 30%

D) 30%

What mature, desert landscape feature consists of coalesced alluvial fans? A) balda B) baja C) bahia D) bajada

D) bajada

The term "drift" ________. A) refers only to moraines B) is synonymous with the term "till" C) refers only to alpine glaciers D) means any sediments of glacial origin

D) means any sediments of glacial origin