Question 1

At its maximum extent, ice covered almost ________ of the Earth's land surface.

Accepted Answer

1/3

Question 2

Hills rounded and sheared off by glacial erosion are called ________.

Accepted Answer

roche moutonnees

Question 3

Unsorted debris from ice sheets, after deposition, is known as ________.

Accepted Answer

till

Question 4

The shape of a(n) ________ can be likened to an amphitheater.

Accepted Answer

cirque

Question 5

The maximum extent of a glacier is marked by a ________.

Accepted Answer

terminal moraine

Question 6

________ is granular snow which is beginning to coalesce into glacial ice.

Accepted Answer

Neve

Question 7

The most significant erosive work of glaciers is accomplished by ________.

Accepted Answer

plucking

Question 8

The main sediment type carried by streams in glacial regions is ________.

Accepted Answer

glacial flour

Question 9

Antarctica's ice sheet encompasses about ________ percent of the world's total land ice.

Accepted Answer

85

Question 10

At its maximum extent, continental glacial ice in North America extended as far south as ________.

Accepted Answer

The Ohio River

Question 11

The approximate maximum thickness of contemporary glacial ice is ________ meters.

Accepted Answer

4,000

Question 12

A nunatak is a rocky pinnacle poking through a(n) ________.

Accepted Answer

ice field

Question 13

A huge boulder resting on a completely different type of bedrock in glacial zones is a(n) ________.

Accepted Answer

erratic

Question 14

The movement of a glacier along its bottom, lubricated by meltwater, is known as ________.

Accepted Answer

basal slip

Question 15

The movement of a glacier is normally measured in ________ per day.

Accepted Answer

centimeters

Question 16

The glacial scouring by bedrock embedded in ice is erosion by ________.

Accepted Answer

abrasion

Question 17

A dark band of rock debris down the middle of a glacier from the union of two adjacent glaciers is a(n) ________.

Accepted Answer

medial morraine

Question 18

A(n) ________ is created by a group of cirques eroding into a mountain peak.

Accepted Answer

horn

Question 19

Long sinuous ridges of stratified drift are termed ________.

Accepted Answer

eskers

Question 20

Glaciers often polish rock to form grooves and smaller, similar features called ________.

Accepted Answer

striations

Question 21

A glacier grows when the accumulation zone grows faster than the ablation zone.

Accepted Answer

True

Question 22

Most sediment in glacial regions consists of glacial flour.

Accepted Answer

True

Question 23

Glacial erosion invariably produces smooth valley slopes.

Accepted Answer

False

Question 24

Cirques are located at elevations high above sea level.

Accepted Answer

True

Question 25

Hanging valleys occur where the mouths of tributary valleys are perched high along the sides of the major stream valleys.

Accepted Answer

True

Question 26

The valley train is the same thing as an outwash plain.

Accepted Answer

False

Question 27

The Great Lakes of the U.S./Canadian border are classic examples of paternoster lakes

Accepted Answer

False

Question 28

Fjords are glacial features found only in the Southern Hemisphere.

Accepted Answer

False

Question 29

U-shaped stream valleys are indicators that a stream valley has been glaciated.

Accepted Answer

True

Question 30

Alaska was completely covered by a Pleistocene ice sheet.

Accepted Answer

False

Question 31

Morainal surfaces containing a number of mounds and depressions are called ________ topography.

Accepted Answer

kame-and-kettle

Question 32

he Finger Lakes district of upstate New York is a prime example of the glacial feature called ________.

Accepted Answer

U-shaped troughs

Question 33

A ________ is an irregularly undulating surface of broad, low rises and shallow depressions. It is composed of unsorted glacially-deposited materials which can cover the landscape to the extent that the preglacial shape is obliterated.

Accepted Answer

till plain

Question 34

A ________ is a lengthy deposit of glaciofluvial alluvial confined to a valley bottom and found beyond the outwash plain.

Accepted Answer

valley train

Question 35

________ are relatively steep-sided mounds or conical hills of stratified drift made from meltwater deposition in a region of stagnant ice.

Accepted Answer

Kames

Question 36

Name and discuss two of the three (3) types of glacial movement.

Accepted Answer

Plastic Flow of Ice - When a mass of ice attains a thickness of about 50 meters, the plastic flow of ice begins in response to the overlying weight. The entire mass does not move universally, rather, there is an oozing outward from around the edge of an ice sheet or downvalley from the end of an alpine glacier.Basal Slip - the entire mass slides over its bed on a lubricating film of water. The glacier mold itself to the shape of the terrain it's riding over.

Question 37

The basic landform feature in glaciated mountains is the cirque - what is it?

Accepted Answer

A cirque is a broad amphitheater hollowed out at the upper-most head of a glacial valley. It has steep, often perpendicular, head and side walls and floor that is either flat, gently sloping or even gouged enough to form a basin. It marks the place where an alpine glacier originated.

GEO 200 Ch 19

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