Exam 13: Glaciers and Ice Ages

Valleys that have been carved by glaciers and have became submerged by rising sea level are called:

A glacier forms wherever the amount of snow that falls in winter equals the amount that melts in summer.

In glacial terrain, a spoon-shaped depression beneath a steep peak is a/an:

A glacier that covers an area of 50,000 square kilometers or more is a/an __________ __________.

A/an __________is a massive, long-lasting accumulation of compacted snow and ice that forms on land.

Sediment particles carried by a glacier are likely to be sharp and jagged.

The higher-elevation part of a glacier is called the zone of ablation.

The Matterhorn is an example of a glacial __________.

__________ is sediment that was deposited directly by a glacier.

An iceberg:

__________ __________ is glacier movement as a viscous fluid.

Glacial streams deposit their sediment downstream from the glacier as __________.

A smaller glacial valley that meets the main valley with a large vertical offset is called a:

Rates of glacial movement depend entirely on air temperature.

During the last glaciation, sea level:

Cycles identified by Milutin Milankovitch are caused by changes in:

Glacial striations can be used to map the flow direction of glaciers.

__________ is sediment that was first transported by a glacier and then transported and deposited by a stream.

In a plastically flowing alpine glacier, the:

Geologic evidence shows that the Earth has been cold and ice covered for about 90 percent of the past 2.5 billion years.