Exam 13: Glaciers and Glaciation

Kames are long,sinuous ridges of stratified drift,which may meander and have tributaries.

Elongated,spoon-shaped hills that have been shaped by an overriding glacier are called ____________________.

What are the different types of moraines: end moraines,ground moraines,recessional moraines,lateral moraines,and medial moraines?

Under what conditions does a glacier advance?

What causes the rate of flow of a glacier to flow more rapidly?

Briefly explain the origin of drumlins.

The two major types of glaciers are ____________________ and ____________________.

Explain the origin of varves and their significance in the chronologies of glacial lake deposits.

The climatic event that began with cooling in about A.D.1300 and lasted until the middle-1800s is known as the Little ____________________.

Under what conditions will the firn limit remain the same from year to year? Under what conditions will it change? What happens if the firn limit moves upward year after year?

If glacial ice were considered a rock,what type of rock would it be,and why?

A strong correlation has been established between periods of intense volcanism and short-term glacial cooling.

Describe the main way that glaciers move.In which situations is this essentially the only type of flow a glacier will undergo?

What are some of the characteristics of large ice-scoured plains,such as those of the Canadian Shield region?

The process by which ice evaporates directly from the surface of a glacier is known as ____________________.

The distal end or edge of the glacier is called its ____________________.

An ice mass of compacted and recrystallized snow that flows under its own weight on land is called a(n)____________________.

The zone of wastage is the portion of a glacier where ____________________ exceed ____________________.

What is the difference between ice caps and continental glaciers?

What is the lesser way that glaciers flow,and what facilitates this movement? In which type of glaciers is this flow more important?