Question 1

Rounded ice grains, called firn, form if:

Accepted Answer

A)  snow survives through one summer. 
B)  snow survives through two summers. 
C)  it falls on basal ice. 
D)  it falls on ablation ice. 
A)  snow survives through one summer. 
B)  snow survives through two summers. 
C)  it falls on basal ice. 
D)  it falls on ablation ice. A

Question 2

The Great Lakes and the Finger Lakes in New York are the result of:

Accepted Answer

A)  scouring by alpine glaciers. 
B)  scouring by continental ice sheets. 
C)  ancient fjords. 
D)  isostasy. 
A)  scouring by alpine glaciers. 
B)  scouring by continental ice sheets. 
C)  ancient fjords. 
D)  isostasy. B

Question 3

A small glacial valley lying high above the floor of the main valley is called a/an __________ __________.

Accepted Answer

hanging valley

Question 4

Alpine glaciers occur:

Accepted Answer

A)  on flatlands in continental interiors. 
B)  on mountains in Antarctica only. 
C)  only close to the equator at very high elevations. 
D)  near mountain tops (at high elevations) on all continents. 
A)  on flatlands in continental interiors. 
B)  on mountains in Antarctica only. 
C)  only close to the equator at very high elevations. 
D)  near mountain tops (at high elevations) on all continents.

Question 5

A glacier that forms in mountainous terrain is a/an __________ glacier.

Accepted Answer

A)  alpine 
B)  continental 
C)  marine 
D)  erratic 
A)  alpine 
B)  continental 
C)  marine 
D)  erratic

Question 6

Ice in the upper 40 meters of a glacier fractures to form crevasses.

Accepted Answer

A) True 
 B)False

Question 7

The lower end of a glacier is called the __________.

Accepted Answer

A)  snow line 
B)  terminus 
C)  zone of accumulation 
D)  tail 
A)  snow line 
B)  terminus 
C)  zone of accumulation 
D)  tail

Question 8

When a glacier retreats steadily, it deposits a/an __________ moraine.

Accepted Answer

A)  medial 
B)  terminal 
C)  recessional 
D)  ground 
A)  medial 
B)  terminal 
C)  recessional 
D)  ground

Question 9

The rate of glacial movement varies with:

Accepted Answer

A)  slope steepness. 
B)  precipitation. 
C)  air temperature. 
D)  all of the above 
A)  slope steepness. 
B)  precipitation. 
C)  air temperature. 
D)  all of the above

Question 10

Glaciers erode __________-shaped valleys.

Accepted Answer

A)  C 
B)  O 
C)  U 
D)  V 
A)  C 
B)  O 
C)  U 
D)  V

Question 11

The __________ separates the zone of accumulation from the zone of ablation.

Accepted Answer

A)  snow line 
B)  terminus 
C)  crevasse 
D)  ice fall 
A)  snow line 
B)  terminus 
C)  crevasse 
D)  ice fall

Question 12

A/an __________ is a long, snake-like ridge formed as the channel deposit of a stream that flowed within or beneath a melting glacier.

Accepted Answer

The answer of A/an __________ is a long, snake-like ridge...

Question 13

A/an __________ is a small lake at the base of a/an __________.

Accepted Answer

A)  tarn, cirque 
B)  tarn, crevasse 
C)  arête, horn 
D)  arête, cirque 
A)  tarn, cirque 
B)  tarn, crevasse 
C)  arête, horn 
D)  arête, cirque

Question 14

During an Ice Age:

Accepted Answer

A)  all of the continental land is covered by a giant continental glacier. 
B)  all glaciers extend into the sea and cover large portions of the oceans. 
C)  the high latitudes are ice covered, but there are no glaciers near the equator. 
D)  alpine glaciers descend into lowlands, and continental glaciers spread over the higher latitudes. 
A)  all of the continental land is covered by a giant continental glacier. 
B)  all glaciers extend into the sea and cover large portions of the oceans. 
C)  the high latitudes are ice covered, but there are no glaciers near the equator. 
D)  alpine glaciers descend into lowlands, and continental glaciers spread over the higher latitudes.

Question 15

The greatest ice age in Earth's history occurred during the Precambrian time.

Accepted Answer

A) True 
 B)False

Question 16

The ice sheets of Greenland and Antarctica contain __________ percent of the world's ice.

Accepted Answer

A)  25 
B)  75 
C)  50 
D)  99 
A)  25 
B)  75 
C)  50 
D)  99

Question 17

A/an __________ is an elongate hill, usually occurring in clusters, that was deposited and eroded by a glacier.

Accepted Answer

A)  ground moraine 
B)  drumlin 
C)  gremlin 
D)  erratic 
A)  ground moraine 
B)  drumlin 
C)  gremlin 
D)  erratic

Question 18

Glaciers form U-shaped valleys.

Accepted Answer

A) True 
 B)False

Question 19

Glacial __________ form as rocks are dragged along at the base of a glacier.

Accepted Answer

A)  crevasses 
B)  snow lines 
C)  cirques 
D)  striations 
A)  crevasses 
B)  snow lines 
C)  cirques 
D)  striations

Question 20

The Pleistocene Ice Age started about __________ million years ago.

Accepted Answer

A)  0.2 
B)  2 
C)  20 
D)  200 
A)  0.2 
B)  2 
C)  20 
D)  200

Exam 13: Glaciers and Ice Ages

Rounded ice grains, called firn, form if:

The Great Lakes and the Finger Lakes in New York are the result of:

A small glacial valley lying high above the floor of the main valley is called a/an __________ __________.

Alpine glaciers occur:

A glacier that forms in mountainous terrain is a/an __________ glacier.

Ice in the upper 40 meters of a glacier fractures to form crevasses.

The lower end of a glacier is called the __________.

When a glacier retreats steadily, it deposits a/an __________ moraine.

The rate of glacial movement varies with:

Glaciers erode __________-shaped valleys.

The __________ separates the zone of accumulation from the zone of ablation.

A/an __________ is a long, snake-like ridge formed as the channel deposit of a stream that flowed within or beneath a melting glacier.

A/an __________ is a small lake at the base of a/an __________.

During an Ice Age:

The greatest ice age in Earth's history occurred during the Precambrian time.

The ice sheets of Greenland and Antarctica contain __________ percent of the world's ice.

A/an __________ is an elongate hill, usually occurring in clusters, that was deposited and eroded by a glacier.

Glaciers form U-shaped valleys.

Glacial __________ form as rocks are dragged along at the base of a glacier.

The Pleistocene Ice Age started about __________ million years ago.

Earth Systems

Minerals

Rocks

Geologic Time: a Story in the Rocks

Geologic Resources

The Active Earth: Plate Tectonics

Earthquakes and the Earths Structure

Volcanoes and Plutons

Mountains

Weathering, Soil, and Erosion

Fresh Water: Streams, Lakes, Ground Water, and Wetlands

Water Resources

Deserts and Wind

Ocean Basins

Oceans and Coastlines

The Atmosphere

Energy Balance in the Atmosphere

Moisture, Clouds, and Weather

Climate

Climate Change

Motions in the Heavens

Planets and Their Moons

Stars, Space, and Galaxies

Filters

A small glacial valley lying high above the floor of the main valley is called a/an .

A/an is a small lake at the base of a/an .