Question 1

Glacial drift that has been modified,sorted,and distributed by meltwater streams is called

Accepted Answer

A) moraine. 
B) outwash. 
C) rock flour. 
D) till. 
A) moraine. 
B) outwash. 
C) rock flour. 
D) till. B

Question 2

Which of the following agents of erosion has the greatest capacity?

Accepted Answer

A) ice 
B) ocean currents 
C) streams 
D) wind 
A) ice 
B) ocean currents 
C) streams 
D) wind A

Question 3

Striations are particularly useful for measuring the direction of ice flow for

Accepted Answer

A) valley glaciers. 
B) continental glaciers. 
C) ice shelves. 
D) cirque glaciers. 
A) valley glaciers. 
B) continental glaciers. 
C) ice shelves. 
D) cirque glaciers. C

Question 4

How fast can surging glaciers move?

Accepted Answer

A) approximately 5 meters per year 
B) approximately 5 kilometers per year 
C) approximately 100 meters per year 
D) approximately 100 kilometers per year 
A) approximately 5 meters per year 
B) approximately 5 kilometers per year 
C) approximately 100 meters per year 
D) approximately 100 kilometers per year

Question 5

When two cirques at the heads of adjacent valleys meet at the moutaintop,they produce a sharp,jagged crest called

Accepted Answer

A) an arête. 
B) a drumlin. 
C) a fjord. 
D) a moraine. 
A) an arête. 
B) a drumlin. 
C) a fjord. 
D) a moraine.

Question 6

When a glacier remains the same size for a long time it means that

Accepted Answer

A) there is no movement in the glacier. 
B) there is no accumulation. 
C) ablation is absent. 
D) accumlation and ablation are equal. 
A) there is no movement in the glacier. 
B) there is no accumulation. 
C) ablation is absent. 
D) accumlation and ablation are equal.

Question 7

How much of the land surface is covered by ice?

Accepted Answer

A) approximately 10% 
B) approximately 50% 
C) approximately 30% 
D) approximately 80% 
A) approximately 10% 
B) approximately 50% 
C) approximately 30% 
D) approximately 80%

Question 8

Which of the following glacial deposits is the most poorly sorted?

Accepted Answer

A) an esker 
B) a kame 
C) a moraine 
D) a varve 
A) an esker 
B) a kame 
C) a moraine 
D) a varve

Question 9

Which of the following agents of erosion has the greatest competence?

Accepted Answer

A) ice 
B) ocean currents 
C) streams 
D) wind 
A) ice 
B) ocean currents 
C) streams 
D) wind

Question 10

In glaciers where the speed of ice flow decreases with depth,we have

Accepted Answer

A) a surge. 
B) basal slip. 
C) plastic flow. 
D) block flow. 
A) a surge. 
B) basal slip. 
C) plastic flow. 
D) block flow.

Question 11

At what time in Earth's history do some geologists speculate that Earth was completely covered in ice?

Accepted Answer

A) 1)8 to 0.01 million years ago (Pleistocene) 
B) 300 to 250 million years ago (Pennsylvanian-Permian) 
C) 750 to 600 million years ago (late Proterozoic) 
D) 4)5 to 4.0 billion years ago (Hadean) 
A) 1)8 to 0.01 million years ago (Pleistocene) 
B) 300 to 250 million years ago (Pennsylvanian-Permian) 
C) 750 to 600 million years ago (late Proterozoic) 
D) 4)5 to 4.0 billion years ago (Hadean)

Question 12

Which of the following forms of ice has the greatest density?

Accepted Answer

A) firn 
B) glacial ice 
C) granular ice 
D) snow 
A) firn 
B) glacial ice 
C) granular ice 
D) snow

Question 13

During glacial maximas,

Accepted Answer

A) ice volumes are high and temperatures are high. 
B) ice volumes are high and temperatures are low. 
C) ice volumes are low and temperatures are low. 
D) ice volumes are low and temperatures are high. 
A) ice volumes are high and temperatures are high. 
B) ice volumes are high and temperatures are low. 
C) ice volumes are low and temperatures are low. 
D) ice volumes are low and temperatures are high.

Question 14

What is the general term for all sediment of glacial origin?

Accepted Answer

A) drift 
B) moraine 
C) outwash 
D) till 
A) drift 
B) moraine 
C) outwash 
D) till

Question 15

What are glacial striations?

Accepted Answer

A) dust formed by grinding rocks to clay-sized particles during glacial movement 
B) grooves created by rocks scratching against bedrock at the base of a glacier 
C) large,streamlined hills of till and bedrock that parallel the direction of ice movement 
D) long,narrow,winding ridges of sand and gravel found in the middle of ground moraines 
A) dust formed by grinding rocks to clay-sized particles during glacial movement 
B) grooves created by rocks scratching against bedrock at the base of a glacier 
C) large,streamlined hills of till and bedrock that parallel the direction of ice movement 
D) long,narrow,winding ridges of sand and gravel found in the middle of ground moraines

Question 16

Which of the following would be the most suitable site for a commercial sand and gravel pit?

Accepted Answer

A) an arête 
B) a drumlin 
C) a kame 
D) a varve 
A) an arête 
B) a drumlin 
C) a kame 
D) a varve

Question 17

During the peak of the last ice age,sea level was ______ than sea level today.

Accepted Answer

A) approximately 1 meter lower 
B) approximately 10 meters lower 
C) approximately 100 meters lower 
D) approximately 1000 meters lower 
A) approximately 1 meter lower 
B) approximately 10 meters lower 
C) approximately 100 meters lower 
D) approximately 1000 meters lower

Question 18

Which of the following features can be used to determine the direction a continental glacier moved?

Accepted Answer

A) drumlins 
B) roches moutonées 
C) striations 
D) all of the above 
A) drumlins 
B) roches moutonées 
C) striations 
D) all of the above

Question 19

Which of the following is an extremely slow-moving sheet of ice that covers vast land areas?

Accepted Answer

A) an arête 
B) a continental glacier 
C) an ice shelf 
D) a valley glacier 
A) an arête 
B) a continental glacier 
C) an ice shelf 
D) a valley glacier

Question 20

The oldest confirmed glaciations occurred during the

Accepted Answer

A) Ordovician period. 
B) Proterozoic eon. 
C) Permian-Pennsylvanian periods. 
D) Pleistocene epoch. 
A) Ordovician period. 
B) Proterozoic eon. 
C) Permian-Pennsylvanian periods. 
D) Pleistocene epoch.

Exam 21: Glaciers: the Work of Ice

Glacial drift that has been modified,sorted,and distributed by meltwater streams is called

Which of the following agents of erosion has the greatest capacity?

Striations are particularly useful for measuring the direction of ice flow for

How fast can surging glaciers move?

When two cirques at the heads of adjacent valleys meet at the moutaintop,they produce a sharp,jagged crest called

When a glacier remains the same size for a long time it means that

How much of the land surface is covered by ice?

Which of the following glacial deposits is the most poorly sorted?

Which of the following agents of erosion has the greatest competence?

In glaciers where the speed of ice flow decreases with depth,we have

At what time in Earth's history do some geologists speculate that Earth was completely covered in ice?

Which of the following forms of ice has the greatest density?

During glacial maximas,

What is the general term for all sediment of glacial origin?

What are glacial striations?

Which of the following would be the most suitable site for a commercial sand and gravel pit?

During the peak of the last ice age,sea level was ______ than sea level today.

Which of the following features can be used to determine the direction a continental glacier moved?

Which of the following is an extremely slow-moving sheet of ice that covers vast land areas?

The oldest confirmed glaciations occurred during the

The Earth System

Plate Tectonics: The Unifying Theory

Earth Materials: Minerals and Rocks

Igneous Rocks: Solids From Melts

Sedimentation: Rocks Formed by Surface Processes

Metamorphism: Alteration of Rocks by Temperature and Pressure

Deformation: Modification of Rocks by Folding and Fracturing

Clocks in Rocks: Timing the Geologic Period

Early History of the Terrestrial Planets

History of the Continents

Geobiology: Life Interacts With Earth

Volcanoes

Earthquakes

Exploring Earths Interior

The Climate System

Weathering,erosion,and Mass Wasting: Interactions Between the Climate and Plate Tectonic Systems

The Hydrologic Cycle and Groundwater

Stream Transport: From Mountains to Oceans

Winds and Deserts

Coastlines and Ocean Basins

Landscapes: Tectonic and Climate Interaction

The Human Impact of Earths Environment

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