Part 1-: Which of the following best describes a drumlin? a) comprised of bedroc

Question

Part 1-:

Which of the following best describes a drumlin?

a) comprised of bedrock; transported and deposited some distance away from its outcrop source

b) comprised of till; smooth-surfaced, elongated hills shaped by the moving ice of a continental glacier

c) comprised of bedrock; erosional feature that marks the upstream source area of an alpine or valley glacier

d) comprised of outwash; curvy ridge formed by deposition of sand and gravel from a stream flowing inside an ice tunnel

e) none of the above

Part 2-:

Which of the following analogies can be applied to glaciers?

a) glaciers act like a conveyor belt.

b) like cows, most glaciers calve in the spring.

c) the base of temperate glaciers can act like skates on ice.

d) like a river, glaciers carve V-shaped valleys.

e) both a and c are correct.

Part 3-:

What was the most recent Pleistocene glacial episode in North America?

a) Dakotan

b) Wisconsinan

c) Oklahoman

d) Indianan

e) Caribbean

Part 4-:

A friend brings samples of glacial deposits for you to analyze. You find that they are high in pyrope garnet, ilmenite, pyroxene and olivine. What else might you find in the area these samples were taken from?

a) active glaciers b) diamonds c) an active volcano d) fertile chernozemic soil e) both a and d

Explanation / Answer

Ans 1) d- comprised of outwash; curvy ridge formed by deposition of sand and gravel from a stream flowing inside an ice tunnel.

Ans 2) a- glacier act like a conveyor belt.

Ans 3) b- wisconsinan

Ans 4) b- diamonds.

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