Exam 17: Glaciers and Glaciation

The down-valley end of the glacier is its terminus.

Where is the world's second largest continental ice sheet?

What general term denotes the wastage of a glacier when combined mechanisms for loss of ice is greater than the input from its head?

Eccentricity, obliquity, and precession are three factors involved in the Milankovitch astronomic explanation of why the Pleistocene continental ice sheets alternately grew and shrank in size.

Tributary glaciers follow the rule of streams and downcut to the level of the main trunk glacier to smoothly join in at the same elevation.

Drumlins are believed to represent deltas built into lakes by meltwater streams.

How does the total land area change during ice ages?

Which one of the following could not have significantly affected climatic variations, and advances and retreats of ice sheets, during the Pleistocene Epoch?

The bottom or downward tip of a crevasse marks the ________.

As eroding valley glaciers oversteepen their walls, rockfalls and slides along their margins add to the load of plucked and abraded debris to form ________.

A(n)________ would likely be situated next to a large end moraine.

________ is a gently rolling sheet of till with an irregular surface deposited under the weight of a glacier.

Who co-discovered Canada's first diamond mine in the Northwest Territories?

Surges in glacial movement are unusually fast rates of movement.

What term denotes a glacial valley that was partly flooded as sea level rose?

The great, Southern Hemisphere glaciation left Jurassic tills on parts of South America, India, and South Africa.

Briefly discuss the indirect effects of glaciation.Indicate whether such changes would occur in conjunction with glaciation or at some time later?

At what depth or thickness of ice does glacial ice make the transition from brittle fracture to plastic flow?

Name two of the five factors that control the differences in the power of glacial erosion?

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.