Question 1

Which of the following glacial deposits is the best 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 2

How much of Earth's land surface is permanently frozen?

Accepted Answer

A) approximately 1% 
B) approximately 5% 
C) approximately 10% 
D) approximately 25% 
A) approximately 1% 
B) approximately 5% 
C) approximately 10% 
D) approximately 25%

Question 3

Which of the following statements about varves is true?

Accepted Answer

A) Clay layers are deposited in summer and silt layers are deposited in winter. 
B) Silt layers are deposited in summer and clay layers are deposited in winter. 
C) Sand layers are deposited in summer and gravel layers are deposited in winter. 
D) Gravel layers are deposited in summer and sand layers are deposited in winter. 
A) Clay layers are deposited in summer and silt layers are deposited in winter. 
B) Silt layers are deposited in summer and clay layers are deposited in winter. 
C) Sand layers are deposited in summer and gravel layers are deposited in winter. 
D) Gravel layers are deposited in summer and sand layers are deposited in winter.

Question 4

When a glacier moves as a block of ice,the movement is called

Accepted Answer

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

Question 5

The process by which icebergs are formed is called

Accepted Answer

A) breaking. 
B) splitting. 
C) cracking. 
D) calving. 
A) breaking. 
B) splitting. 
C) cracking. 
D) calving.

Question 6

When a glacier moves like a stack of cards that has been shifted,the movement is called

Accepted Answer

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

Question 7

In a valley glacier located in a cold region the flow rate will

Accepted Answer

A) increase with depth. 
B) increase from center to the sides. 
C) be constant throughout the glacier. 
D) decrease with depth. 
A) increase with depth. 
B) increase from center to the sides. 
C) be constant throughout the glacier. 
D) decrease with depth.

Question 8

If accumulation exceeds ablation,then

Accepted Answer

A) the glacial ice will flow downhill and the glacial front will move downhill. 
B) the glacial ice will flow downhill,but the glacial front will move uphill. 
C) the glacial ice will flow uphill,but the glacial front will move downhill. 
D) the glacial ice will flow uphill and the glacial front will move uphill. 
A) the glacial ice will flow downhill and the glacial front will move downhill. 
B) the glacial ice will flow downhill,but the glacial front will move uphill. 
C) the glacial ice will flow uphill,but the glacial front will move downhill. 
D) the glacial ice will flow uphill and the glacial front will move uphill.

Question 9

If a very large iceberg in the ocean were to melt,what would happen to sea level?

Accepted Answer

A) The sea level would decrease slightly. 
B) The sea level would remain the same. 
C) The sea level would increase slightly. 
D) The sea level would decrease or increase depending on the air content of the iceberg. 
A) The sea level would decrease slightly. 
B) The sea level would remain the same. 
C) The sea level would increase slightly. 
D) The sea level would decrease or increase depending on the air content of the iceberg.

Question 10

In order to be called a glacier a mass of ice must

Accepted Answer

A) reach a certain thickness. 
B) have lost most of its trapped air. 
C) reach a certain areal extent. 
D) move downhill. 
A) reach a certain thickness. 
B) have lost most of its trapped air. 
C) reach a certain areal extent. 
D) move downhill.

Question 11

Which of the following agents of erosion deposits the most poorly sorted sediment?

Accepted Answer

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

Question 12

Which of the following is a depositional feature rather than an erosional feature?

Accepted Answer

A) an arête 
B) a cirque 
C) an esker 
D) a hanging valley 
A) an arête 
B) a cirque 
C) an esker 
D) a hanging valley

Question 13

Why do glacial crevasses form?

Accepted Answer

A) because glacial meltwater erodes small valleys as glacial rivers flow 
B) because plate tectonic forces deform the glacier 
C) because the glacial surface is brittle and cracks as the ice flows 
D) because the glacial surface partially melts,leaving holes and cracks 
A) because glacial meltwater erodes small valleys as glacial rivers flow 
B) because plate tectonic forces deform the glacier 
C) because the glacial surface is brittle and cracks as the ice flows 
D) because the glacial surface partially melts,leaving holes and cracks

Question 14

Which of the following terms describes an accumulation of rocky,sandy,or clayey material deposited at the end of a glacier?

Accepted Answer

A) dune 
B) esker 
C) loess 
D) moraine 
A) dune 
B) esker 
C) loess 
D) moraine

Question 15

What triggered the Pleistocene ice ages?

Accepted Answer

A) an increase in greenhouse gases 
B) Milankovitch cycles 
C) a shift in Earth's axis of rotation 
D) Geoscientists are still uncertain. 
A) an increase in greenhouse gases 
B) Milankovitch cycles 
C) a shift in Earth's axis of rotation 
D) Geoscientists are still uncertain.

Question 16

_______ are glacial landforms that are called "sheep backs" in some countries and "whale backs" in other countries,such as Iceland.

Accepted Answer

A) Eskers 
B) Roche moutonées 
C) Drumlins 
D) Kames 
A) Eskers 
B) Roche moutonées 
C) Drumlins 
D) Kames

Question 17

The main force that drives glacial flow is

Accepted Answer

A) gravity. 
B) tides. 
C) wind. 
D) the Moon. 
A) gravity. 
B) tides. 
C) wind. 
D) the Moon.

Question 18

Which of the following erosional features is characteristic of rivers and not glaciers?

Accepted Answer

A) an arête 
B) a cirque 
C) a roche moutonée 
D) a V-shaped valley 
A) an arête 
B) a cirque 
C) a roche moutonée 
D) a V-shaped valley

Question 19

Where is the largest mass of ice on Earth located?

Accepted Answer

A) Antarctica 
B) Greenland 
C) the Himalayas 
D) Siberia 
A) Antarctica 
B) Greenland 
C) the Himalayas 
D) Siberia

Question 20

A large glacier has three medial moraines on top of it.How many valley glaciers must have a fed it?

Accepted Answer

A) one 
B) two 
C) three 
D) four 
A) one 
B) two 
C) three 
D) four

Exam 21: Glaciers: the Work of Ice

Which of the following glacial deposits is the best sorted?

How much of Earth's land surface is permanently frozen?

Which of the following statements about varves is true?

When a glacier moves as a block of ice,the movement is called

The process by which icebergs are formed is called

When a glacier moves like a stack of cards that has been shifted,the movement is called

In a valley glacier located in a cold region the flow rate will

If accumulation exceeds ablation,then

If a very large iceberg in the ocean were to melt,what would happen to sea level?

In order to be called a glacier a mass of ice must

Which of the following agents of erosion deposits the most poorly sorted sediment?

Which of the following is a depositional feature rather than an erosional feature?

Why do glacial crevasses form?

Which of the following terms describes an accumulation of rocky,sandy,or clayey material deposited at the end of a glacier?

What triggered the Pleistocene ice ages?

_______ are glacial landforms that are called "sheep backs" in some countries and "whale backs" in other countries,such as Iceland.

The main force that drives glacial flow is

Which of the following erosional features is characteristic of rivers and not glaciers?

Where is the largest mass of ice on Earth located?

A large glacier has three medial moraines on top of it.How many valley glaciers must have a fed it?

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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