Exam 18: Amazing Ice: Glaciers and Ice Ages

The Milankovitch cycles describe the change in ________ because of changes in the ________ of Earth relative to the Sun.

Glacial ice exhibits ________ behavior near the top but ________ behavior beneath a depth of 60 m.

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

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

Stratified sorted sand and gravel are deposited by ________.

An intermediate product in the transformation of snow to glacial ice is ________.

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

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

________ decreases as glaciers form.

Ice is a substance with a high albedo,which means it ________.

Cirques and horns are features associated with ________.

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

________ glaciers cover vast areas of land,whereas ________ glaciers are restricted to mountaintops.

At depths of greater than 60,ice moves by plastic deformation.What causes this transition from brittle to ductile behavior?

Label the glaciers in the image below using words from the word bank included (hint: not all the names will be used). Pledmont glacier Continental glacier Tidewater glacier Valley glacier Hanging glacier Cirque glacier Ice apron Mountain ice cap

What types of moraines are shown in the figure below?

During the last ice age,a ________ glacier covered much of the northern United States.

The polar ice caps on Mars are an example of what type of glacier?

List and describe one short-term cause for glaciations.

There have been ________ to ________ ice ages in Earth's history,with the latest one occurring in the ________.