Exam 21: Glaciers: the Work of Ice

A given layer of glacial ice initially formed from a layer of snow that fell

The oldest confirmed glaciations occurred approximately _________ years ago.

When did the last ice age end?

In the European Alps,the last ice age is called the Wurm.What is the same glaciation called in North America?

During the last ice age the continents were ______ than today.

How do kettles form?

In glaciers undergoing basal slip,the flow rates will _____________ with depth.

The __________ hypothesis proposes that Earth was entirely covered with ice during the late Precambrian.

Which of the following sequences shows a continuous decrease in air content?

A snow deposit contains approximately 90% air.How much air does glacial ice contain?

Generally,it will take _________ for firn to turn into glacial ice.

Icebergs form through a process called

Which of the following ice formations has the most extensive ice shelf?

Which of the following is not one of the possible explanations for previous ice ages?

In a valley glacier,where is the ice velocity the fastest?

Which of the following would not be considered a glacier?

Glaciers tend to move by _________ in cold regions and ________ in temperate regions.

What are fjords?

Which of the following describes the transformation of ice to gaseous water vapor?

If a large glacier is fed by three separate valley glaciers then how many medial moraines,at the most,would you expect to see on top of it?