Name:_____________________

August 29, 2003

Glaciers Pre Lab

1. What are the two types of glaciers?

2. What is the zone of accumulation?

3. What is the zone of wastage/ablation?

4. What is the snowline/equilibrium line?

5. What is mass balance?

6. How does a glacier retreat?

7. For the following, label each feature as erosional (E) or depositional (D).

Cirque	Outwash Plain	Fjord
Drumlin	Col	Kettle
Horn	Kame	Paternoster Lakes
Medial Moraine	Glacial Drift	Arêtes
Lateral Moraine	End/Terminal Moraine	Ground Moraine
Tarn	Esker

History of the Great Lakes Article

1. T or F Large lakes existed in the area of the Great Lakes before the Pleistocene.

2. How many of the Great Lakes are eroded below sea level?

3. What percent of all freshwater in fresh water lakes is contained in the Great Lakes?

4. How far into North America can oceangoing vessels go?

5. How tall is the Niagaran Escarpment?

6. How long before the escarpment is eliminated and Lake Erie drains?