Question 1

Stratified sorted sand and gravel are deposited by ________.

Accepted Answer

Stratified sorted sand and gravel are typically deposited by glacial outwash streams, which carry sediment away from the glacier and sort it by size as the water flows. Mountain and continental glaciers also deposit sediment, but it is often unsorted and not stratified. Windstorms can transport sand and gravel, but they do not deposit it in a stratified manner.

Question 2

Sediments deposited directly by glaciers as they melt are characterized by ________.

Accepted Answer

Sediments deposited directly by glaciers are typically unsorted, meaning they contain a mixture of various grain sizes, ranging from boulders to fine clay particles. This is because the glaciers transport the sediments and deposit them in a chaotic manner as they melt, rather than carefully sorting them by size. As a result, sediments deposited by glaciers are often referred to as "till" or "glacial till." Grades bedding refers to layers of sediment that are sorted by size, with the largest grains at the bottom and the smallest at the top, and is not typically found in sediments deposited by glaciers.

Question 3

Identify the area where layered sediments have been deposited in the figure below.

Accepted Answer

The answer of Identify the area where layered sediments have...

Question 4

You are hiking in your favorite forest when you encounter a surface that appears to have very fine scratches in it.What are these features?

Accepted Answer

Striations are fine scratches or grooves on the surface of rocks caused by glacier movement. Glacial till refers to the sedimentary material that gets deposited by glacier movement, moraines refer to the ridges of sediment left by glaciers, and scour marks refer to erosion caused by moving water.

Question 5

What types of moraines are shown in the figure below?

Accepted Answer

The moraines depicted in the figure form along the center line of a glacier through the accumulation of debris from the merging of two glaciers, which is typical of medial moraines.

Question 6

Moraines are composed of jumbled piles of very poorly sorted rock fragments ranging in size from boulder to clay that fall out near the edges of glaciers.Why are the larger particles (boulders,etc.)not broken down during transport in the glacier?

Accepted Answer

Glaciers pick up and carry along sediments of all sizes as they move, without necessarily breaking them down. The ice acts as a conveyor belt, transporting materials from one location to another, which explains why larger particles like boulders can be found in moraines without being significantly broken down during transport.

Question 7

Identify the farthest reach of the glacier in the figure below.

Accepted Answer

The answer of Identify the farthest reach of the glacier...

Question 8

You are hiking in Illinois and notice several ringlike hills composed of till.You climb to the top of one,look toward the south,and see several more hills in the distance.In which direction did the glacier advance?

Accepted Answer

The ringlike hills composed of till are likely drumlins, which are formed by glacial movement. The tapered end of a drumlin points in the direction the glacier was moving, so if you see more hills to the south, the glacier advanced from the north to the south.

Question 9

Cirques,horns,and arêtes form from glacial ________,whereas moraines,erratics,and till form from glacial ________.

Accepted Answer

Cirques, horns, and arêtes are landforms that are created as glaciers erode the land through abrasion and plucking. In contrast, moraines, erratics, and till are all formed from the deposition of sediment as glaciers advance and retreat. Therefore, the correct choice is A) erosion; deposition.

Question 10

A(n)________ in eustatic sea level is ultimately the result of a ________ event.

Accepted Answer

A decrease in eustatic sea level is ultimately the result of a global cooling event. During a global cooling event, water is removed from the oceans and trapped in glaciers and ice sheets, causing sea levels to decrease. This is in contrast to local uplift or subsidence, which are caused by tectonic activity or other local factors. An increase in eustatic sea level could be caused by either global cooling or local uplift. Therefore, option D is the best choice.

Question 11

During the Pleistocene Ice Age,glaciers covered most of the ________ but contained several ________ centers.

Accepted Answer

The Pleistocene Ice Age occurred during the Quaternary Period and lasted until about 10,000 years ago. During this time, glaciers covered most of the northern hemisphere, including parts of North America, Europe, and Asia. These glaciers were characterized by accumulation centers where snow accumulated and ablation zones where ice melted or evaporated. Therefore, the best choice is A, which corresponds to the northern hemisphere and accumulation centers.

Question 12

In the movie Ice Age: The Meltdown,there is a large wall of ice that begins to melt and finally breaks,causing a large flood.What real-life geologic event was this part of the movie based on?

Accepted Answer

The destruction of Glacial Lake Missoula is a real-life geologic event that closely resembles the scenario in Ice Age: The Meltdown, where a massive ice dam broke, releasing enormous volumes of water and causing widespread flooding.

Question 13

Identify the esker in the figure below.

Accepted Answer

The answer of Identify the esker in the figure below....

Question 14

Wind blows finer particles long distances from glacial environments,where they settle out to form ________.

Accepted Answer

The fine particles blown by wind from glacial environments settle out to form loess, which is a type of windblown sediment composed of silt-sized particles. Firn is compacted snow that has not yet turned into ice. Outwash is sediment deposited by meltwater streams from glaciers. Till is sediment deposited directly by a glacier.

Question 15

The loss of rainforests would ________ the greenhouse gases,thereby ________ global warming.

Accepted Answer

The loss of rainforests would increase the greenhouse gases, thereby increasing global warming. This is because rainforests function as carbon sinks, absorbing carbon dioxide from the atmosphere. When rainforests are destroyed, this stored carbon is released back into the atmosphere, contributing to the greenhouse effect and global warming.

Question 16

Which types of features would you find in a glacially carved landscape?

Accepted Answer

Glacially carved landscapes often exhibit features like cirques (bowl-shaped depressions), arêtes (narrow ridges), horns (sharp peaks), and moraines (ridges or mounds of glacial till). Eskers, kettles, and tarns are also glacial features but are typically associated with meltwater rather than glacial carving. Drumlins and ground moraines are associated with glacial deposition rather than carving.

Question 17

If you wander around Central Park in New York City,you will eventually encounter random,large boulders that are made of a type of rock not found in the area.How did these large boulders get to Central Park?

Accepted Answer

The large boulders found in Central Park are most likely glacial erratics, meaning they were carried by glaciers during the last Ice Age and deposited in their current location when the ice receded. The other choices are unlikely, as the Parks and Recreation Department would not randomly place large boulders throughout the park, rivers would not transport rocks that are not native to the area, and there is no evidence of a giant tsunami in the area.

Question 18

Sediments deposited directly by glaciers as they melt are termed ________.

Accepted Answer

Sediments deposited directly by glaciers as they melt are called till.

Question 19

Using the figure below,identify which way the glacier advanced.

Accepted Answer

The answer of Using the figure below,identify which way the...

Question 20

If glaciers carry a mixture of different clast sizes,why are glacial outwash deposits layered?

Accepted Answer

Glacial outwash deposits are layered because they are sorted and deposited by meltwater streams flowing from the glacier, not directly by the glacier itself. These streams carry sediments away from the glacier and deposit them according to their size and weight, creating distinct layers.

Quiz 22: Amazing Ice: Glaciers and Ice Ages

Stratified sorted sand and gravel are deposited by ________.

Sediments deposited directly by glaciers as they melt are characterized by ________.

Identify the area where layered sediments have been deposited in the figure below.

You are hiking in your favorite forest when you encounter a surface that appears to have very fine scratches in it.What are these features?

What types of moraines are shown in the figure below?

Moraines are composed of jumbled piles of very poorly sorted rock fragments ranging in size from boulder to clay that fall out near the edges of glaciers.Why are the larger particles (boulders,etc.) not broken down during transport in the glacier?

Identify the farthest reach of the glacier in the figure below.

You are hiking in Illinois and notice several ringlike hills composed of till.You climb to the top of one,look toward the south,and see several more hills in the distance.In which direction did the glacier advance?

Cirques,horns,and arêtes form from glacial ,whereas moraines,erratics,and till form from glacial .

A(n) in eustatic sea level is ultimately the result of a event.

During the Pleistocene Ice Age,glaciers covered most of the but contained several centers.

In the movie Ice Age: The Meltdown,there is a large wall of ice that begins to melt and finally breaks,causing a large flood.What real-life geologic event was this part of the movie based on?

Identify the esker in the figure below.

Wind blows finer particles long distances from glacial environments,where they settle out to form ________.

The loss of rainforests would the greenhouse gases,thereby global warming.

Which types of features would you find in a glacially carved landscape?

If you wander around Central Park in New York City,you will eventually encounter random,large boulders that are made of a type of rock not found in the area.How did these large boulders get to Central Park?

Sediments deposited directly by glaciers as they melt are termed ________.

Using the figure below,identify which way the glacier advanced.

If glaciers carry a mixture of different clast sizes,why are glacial outwash deposits layered?

Quiz 22: Amazing Ice: Glaciers and Ice Ages

Stratified sorted sand and gravel are deposited by ________.

Sediments deposited directly by glaciers as they melt are characterized by ________.

Identify the area where layered sediments have been deposited in the figure below.

You are hiking in your favorite forest when you encounter a surface that appears to have very fine scratches in it.What are these features?

What types of moraines are shown in the figure below?

Moraines are composed of jumbled piles of very poorly sorted rock fragments ranging in size from boulder to clay that fall out near the edges of glaciers.Why are the larger particles (boulders,etc.) not broken down during transport in the glacier?

Identify the farthest reach of the glacier in the figure below.

You are hiking in Illinois and notice several ringlike hills composed of till.You climb to the top of one,look toward the south,and see several more hills in the distance.In which direction did the glacier advance?

Cirques,horns,and arêtes form from glacial ________,whereas moraines,erratics,and till form from glacial ________.

A(n) ________ in eustatic sea level is ultimately the result of a ________ event.

During the Pleistocene Ice Age,glaciers covered most of the ________ but contained several ________ centers.

In the movie Ice Age: The Meltdown,there is a large wall of ice that begins to melt and finally breaks,causing a large flood.What real-life geologic event was this part of the movie based on?

Identify the esker in the figure below.

Wind blows finer particles long distances from glacial environments,where they settle out to form ________.

The loss of rainforests would ________ the greenhouse gases,thereby ________ global warming.

Which types of features would you find in a glacially carved landscape?

If you wander around Central Park in New York City,you will eventually encounter random,large boulders that are made of a type of rock not found in the area.How did these large boulders get to Central Park?

Sediments deposited directly by glaciers as they melt are termed ________.

Using the figure below,identify which way the glacier advanced.

If glaciers carry a mixture of different clast sizes,why are glacial outwash deposits layered?

Cirques,horns,and arêtes form from glacial ,whereas moraines,erratics,and till form from glacial .

A(n) in eustatic sea level is ultimately the result of a event.

During the Pleistocene Ice Age,glaciers covered most of the but contained several centers.

The loss of rainforests would the greenhouse gases,thereby global warming.