Question 1

Most of an iceberg is under water because ________.

Accepted Answer

A) ice is more dense than seawater 
B) seawater is more dense than ice 
C) the mass of an iceberg is concentrated in the zone of wastage 
D) the mass of an iceberg is concentrated in the zone of accumulation 
A) ice is more dense than seawater 
B) seawater is more dense than ice 
C) the mass of an iceberg is concentrated in the zone of wastage 
D) the mass of an iceberg is concentrated in the zone of accumulation

Question 2

Bajadas develop from coalescence of alluvial fans along fronts of mountain ranges in arid lands.

Accepted Answer

A) True 
 B)False

Question 3

If all of the ice now stored in Antarctica's glaciers melted,what would happen?

Accepted Answer

A) Sea water would become fresh enough to drink because glaciers are made of fresh water. 
B) Sea level would rise flooding many coastal cities. 
C) Because glacial melt water is less dense than sea water,the glacial melt will float on top of the ocean and not affect the land areas. 
D) Ice bergs would float to the equatorial regions of the earth where they would lower the temperature and cause the climate to become cooler. 
A) Sea water would become fresh enough to drink because glaciers are made of fresh water. 
B) Sea level would rise flooding many coastal cities. 
C) Because glacial melt water is less dense than sea water,the glacial melt will float on top of the ocean and not affect the land areas. 
D) Ice bergs would float to the equatorial regions of the earth where they would lower the temperature and cause the climate to become cooler.

Question 4

Bowl-shaped depressions in bedrock at upstream ends of alpine glacial valleys are called ________.

Accepted Answer

The answer of Bowl-shaped depressions in bedrock at upstream ends...

Question 5

The loess deposited in many parts of the Midwest ________.

Accepted Answer

A) was once glacial outwash deposits 
B) is in the form of transverse dunes 
C) is uniformly thick 
D) had its source in desert regions 
A) was once glacial outwash deposits 
B) is in the form of transverse dunes 
C) is uniformly thick 
D) had its source in desert regions

Question 6

Arêtes,horns,and U-shaped valleys are erosional features carved from bedrock by glaciers.

Accepted Answer

A) True 
 B)False

Question 7

Why is wind less effective than moving water at picking up and moving materials?

Accepted Answer

A) Air is less dense than water 
B) Air moves slower than water 
C) Air moves faster than water 
D) Air does not move very far 
A) Air is less dense than water 
B) Air moves slower than water 
C) Air moves faster than water 
D) Air does not move very far

Question 8

Crevasses (deep fractures or cracks)form because ________.

Accepted Answer

A) not all of the ice in a glacier moves downhill at the same rate in the glacier 
B) as the glacier moves over irregular topography the bottom of the glacier (known as the zone of fracture)cracks and the cracks propagate upward to the surface of the glacier 
C) as the glacier moves over irregular topography,the brittle upper layer or zone of fracture is subject to tension and cracks above the ductile layer 
D) as the glacier moves over irregular topography,cracks can form anywhere in the glacier but they are called "crevasses" only if they are near the surface 
E) there is not always the same amount of ice available in all areas so cracks form when the ice tries to move and fill in empty parts of the glacier 
A) not all of the ice in a glacier moves downhill at the same rate in the glacier 
B) as the glacier moves over irregular topography the bottom of the glacier (known as the zone of fracture)cracks and the cracks propagate upward to the surface of the glacier 
C) as the glacier moves over irregular topography,the brittle upper layer or zone of fracture is subject to tension and cracks above the ductile layer 
D) as the glacier moves over irregular topography,cracks can form anywhere in the glacier but they are called "crevasses" only if they are near the surface 
E) there is not always the same amount of ice available in all areas so cracks form when the ice tries to move and fill in empty parts of the glacier

Question 9

When a glacier is retreating,the upstream ice is still moving forward toward the downstream terminus of the glacier.

Accepted Answer

A) True 
 B)False

Question 10

Glaciation has only been recorded for the Quaternary period of the earth's history demonstrating that the cause of the Ice Ages is the earth's orbit moving farther from the Sun.

Accepted Answer

A) True 
 B)False

Question 11

What of the following is considered to be the most likely cause of the Quaternary Ice ages?

Accepted Answer

A) human activity releasing "greenhouse" gases 
B) plate tectonics moving continents to polar regions 
C) variations in the earth's orbit 
D) variations in the Sun's intensity 
A) human activity releasing "greenhouse" gases 
B) plate tectonics moving continents to polar regions 
C) variations in the earth's orbit 
D) variations in the Sun's intensity

Question 12

At the base of a glacier,the ice moves by ________.

Accepted Answer

A) fracturing 
B) fracturing and sliding 
C) sliding and ductile flow 
D) ductile flow and fracturing 
A) fracturing 
B) fracturing and sliding 
C) sliding and ductile flow 
D) ductile flow and fracturing

Question 13

A ________ forms when a block of ice is buried in drift and subsequently melts,creating a pit.

Accepted Answer

A) tarn 
B) paternoster 
C) kame 
D) kettle 
A) tarn 
B) paternoster 
C) kame 
D) kettle

Question 14

Which letter,T thru Z,corresponds to the object in the photo labeled "A"?

Accepted Answer

The answer of Which letter,T thru Z,corresponds to the object...

Question 15

Our detailed knowledge of the glacial cycles and their duration is based primarily on ________.

Accepted Answer

A) ice cores 
B) seafloor sediments 
C) land sediments 
D) climate records 
A) ice cores 
B) seafloor sediments 
C) land sediments 
D) climate records

Question 16

calving zone of accumulation melting zone of wastage

Accepted Answer

zone of ac

Question 17

In a dry climate,weathering is significantly less than in a humid climate because ________.

Accepted Answer

A) wind is not a significant weathering agent 
B) there is a shortage of moisture and organic acids 
C) rivers are ephemeral and do not cause weathering in the desert 
D) sand covers much of the rock surface and protects them from weathering in a desert 
A) wind is not a significant weathering agent 
B) there is a shortage of moisture and organic acids 
C) rivers are ephemeral and do not cause weathering in the desert 
D) sand covers much of the rock surface and protects them from weathering in a desert

Question 18

loess alluvial fan playa inselberg

Accepted Answer

The answer of loess alluvial fan playa inselberg...

Question 19

How is sea ice different from glacial ice?

Accepted Answer

A) Sea ice is thicker than glacial ice,and sea ice floats while glacial ice does not float. 
B) Sea ice is thicker than glacial ice,and both sea ice and glacial ice can float. 
C) Sea ice is thinner than glacial ice,and both sea ice and glacial ice can float. 
D) Sea ice is thinner than glacial ice,and sea ice floats while glacial ice does not float. 
A) Sea ice is thicker than glacial ice,and sea ice floats while glacial ice does not float. 
B) Sea ice is thicker than glacial ice,and both sea ice and glacial ice can float. 
C) Sea ice is thinner than glacial ice,and both sea ice and glacial ice can float. 
D) Sea ice is thinner than glacial ice,and sea ice floats while glacial ice does not float.

Question 20

Running water is an important erosional agent in many arid lands despite infrequent rainfalls.

Accepted Answer

A) True 
 B)False

Exam 6: Glaciers, deserts, and Wind

Most of an iceberg is under water because ________.

Bajadas develop from coalescence of alluvial fans along fronts of mountain ranges in arid lands.

If all of the ice now stored in Antarctica's glaciers melted,what would happen?

Bowl-shaped depressions in bedrock at upstream ends of alpine glacial valleys are called ________.

The loess deposited in many parts of the Midwest ________.

Arêtes,horns,and U-shaped valleys are erosional features carved from bedrock by glaciers.

Why is wind less effective than moving water at picking up and moving materials?

Crevasses (deep fractures or cracks)form because ________.

When a glacier is retreating,the upstream ice is still moving forward toward the downstream terminus of the glacier.

Glaciation has only been recorded for the Quaternary period of the earth's history demonstrating that the cause of the Ice Ages is the earth's orbit moving farther from the Sun.

What of the following is considered to be the most likely cause of the Quaternary Ice ages?

At the base of a glacier,the ice moves by ________.

A ________ forms when a block of ice is buried in drift and subsequently melts,creating a pit.

Which letter,T thru Z,corresponds to the object in the photo labeled "A"?

Our detailed knowledge of the glacial cycles and their duration is based primarily on ________.

calving zone of accumulation melting zone of wastage

In a dry climate,weathering is significantly less than in a humid climate because ________.

loess alluvial fan playa inselberg

How is sea ice different from glacial ice?

Running water is an important erosional agent in many arid lands despite infrequent rainfalls.

Introduction to Earth Science

Matter and Minerals

Rocks: Materials of the Solid Earth

Weathering, soil, and Mass Wasting

Running Water and Groundwater

Plate Tectonics: a Scientific Revolution Unfolds

Earthquakes and Earths Interior

Volcanoes and Other Igneous Activity

Crustal Deformation and Mountain Building

Geologic Time

Earths Evolution Through Geologic Time

The Ocean Floor

Ocean Water and Ocean Life

The Dynamic Ocean

The Atmosphere: Composition,structure,and Temperature

Moisture, clouds, and Precipitation

Air Pressure and Wind

Weather Patterns and Severe Weather

World Climates and Global Climate Change

Origin of Modern Astronomy

Touring Our Solar System

Light,astronomical Observations,and the Sun

Beyond Our Solar System

Filters