Question 1

Antarctica was the first Continental Ice Sheet to form during the onset of the Late Cenozoic Ice Age.

Accepted Answer

Antarctica began glaciating around 34 million years ago, during the Late Eocene, and eventually became fully covered by ice around 15 million years ago, during the Miocene. It is considered the first continental ice sheet to form during the onset of the Late Cenozoic Ice Age.

Question 2

Where do the majority of mountain glaciers exist in North America?&#10;A) in the Arctic Islands of Canada&#10;B) along the Sierra Nevada Mountains&#10;C) in Coast Mountains of British Columbia&#10;D) both (a) and (c)

Accepted Answer

The Arctic Islands of Canada and the Coast Mountains of British Columbia are both known to have a majority of mountain glaciers in North America. The Sierra Nevada Mountains have glaciers but not as many as the other two regions.

Question 3

At what latitudes do glaciers become less common?&#10;A) above 50 degrees N. latitude&#10;B) below 50 degrees N. latitude&#10;C) 90 degrees S. latitude&#10;D) 60 degrees N. latitude

Accepted Answer

Glaciers become less common below 50 degrees N. latitude because at lower latitudes, temperatures are generally warmer, and there is less precipitation, making it more difficult for glaciers to form and sustain themselves.

Question 4

All of Africas glaciers exist on these two mountains.&#10;A) Mt. Cook and Mt. Kilimanjaro&#10;B) Mt. Cook and Mt. Rainier&#10;C) Mt. Kenya and Mt. Kilimanjaro&#10;D) Mt. Kenya and Mt. Cook

Accepted Answer

Mt. Kilimanjaro and Mt. Kenya are the only two mountains in Africa that have glaciers.

Question 5

Many of the world's glaciers lie in two major clusters on the Eurasian landmass. These clusters are:&#10;A) Caucasus Mountains and Altay Mountains&#10;B) Carpathian Mountains and Black Mountains&#10;C) Norway and Scandinavian Mountains&#10;D) European Alps and south-central Asian zone

Accepted Answer

The European Alps and the south-central Asian zone are the two major clusters on the Eurasian landmass where many of the world's glaciers lie. The other options listed do not have significant glacier clusters in their respective regions.

Question 6

River valleys are typically V-shaped, and glacial valleys are typically U-shaped.

Accepted Answer

This is true. River valleys typically have a V-shape because water erodes the landscape from the top down, creating a narrow, steep-walled channel. On the other hand, glacial valleys are typically U-shaped because glaciers move from side to side, carving out wider, smoother channels with a flat bottom.

Question 7

Hillsides that have been cut off by a glacier straightening the valley course are called:&#10;A) hanging valleys&#10;B) truncated spurs&#10;C) glacial troughs&#10;D) fjords

Accepted Answer

Hillsides that have been cut off by a glacier straightening the valley course are called truncated spurs. Hanging valleys are formed when the main glacier cuts through the side valleys, leaving them at a higher elevation. Glacial troughs are U-shaped valleys carved out by glaciers. Fjords are long, narrow inlets with steep sides or cliffs, typically formed by glacial erosion.

Question 8

Tributary glaciers do not erode the bedrock as deeply as the main glacial valley; therefore, when ice melts the tributary valley floor sits at a higher elevation and produces a _____ above the main valley's floor.

A) hanging valley
B) truncated spur
C) glacial trough
D) fjord

Accepted Answer

Tributary glaciers do not erode the bedrock as deeply as the main glacial valley; therefore, when ice melts the tributary valley floor sits at a higher elevation and produces a _____ above the main valley's floor.

A) hanging valley
B) truncated spur
C) glacial trough
D) fjord

Question 9

The weight of glaciers carve out amphitheater-like basins producing _____ high up in a mountain.&#10;A) cirques&#10;B) horns&#10;C) ar&#234;tes&#10;D) rock steps

Accepted Answer

Cirques are basin-like features carved out by glaciers at the head of a mountain valley. The other options, horns, arêtes, and rock steps, are also formed by glacial erosion but do not necessarily involve the formation of basin-like features.

Question 10

A(n) _____ is a post-glacial feature produced when bedrocks fracture making them susceptible to frost wedging. The repeated mechanical breakdown of rocks from freeze-thaw cycles produce bedrocks to produce flat surfaces of varied heights.

A) cirque
B) horn
C) arête
D) rock step

Accepted Answer

This post-glacial feature described is known as a rock step, which is formed through the repeated freezing and thawing of bedrocks. The other choices, cirque, horn, and arête, are all glacial landforms.

Question 11

All are erosional features of glaciers EXCEPT:&#10;A) moraines&#10;B) cirques&#10;C) ar&#234;tes&#10;D) horns

Accepted Answer

The answer of All are erosional features of glaciers EXCEPT:&#10;A)...

Question 12

_____ are formed when small circular lakes occur at the floor of cirque basins.&#10;A) finger lakes&#10;B) tarns&#10;C) valley train&#10;D) landslide lake

Accepted Answer

The answer of _____ are formed when small circular lakes...

Question 13

Glacial deposits that have been deposited at the front of glaciers after being pushed along by a glacier are called:&#10;A) lateral moraines&#10;B) medial moraines&#10;C) ground moraines&#10;D) terminal moraines

Accepted Answer

The answer of Glacial deposits that have been deposited at...

Question 14

Depositional debris that is ground into very fine particles are termed:&#10;A) frost wedge&#10;B) glacial till&#10;C) rock flour&#10;D) terminal moraine

Accepted Answer

The answer of Depositional debris that is ground into very...

Deck 45: Landforms and Landscapes of Mountain Glaciers