Glaciers
Topic: What are glaciers?
Objectives:
1.
2.
3.
4.
5.
6.
Define glaciers and distinguish between the two main types of glaciers.
Discuss the formation of glaciers.
Explain the force that causes glaciers to move.
Discuss the mechanisms involved in the advance and retreat of glaciers.
Draw an overhead and side profile of a typical glacier.
Given a diagram of glacial depositional features, Label: eskers, kettles, terminal moraines, drumlins and
outwash plain.
7. Given a diagram of alpine glacial erosion, label the horn, arêtes, cirques, “U” shaped valley, and
hanging valley.
8. List the size and sorting of sediment carried by glaciers.
Class Notes
Obj. 1
1. The time of glaciations is known as the ________________________ which is also known as the
_______________________ (ESRT Pg. 8)
2. Glaciers____________________________________________________________________
Types of Glaciers
_________________________
___________________________
a. ________________________
a. _________________________
b. ________________________
b. _________________________
c. ________________________
c. _________________________
Obj. 2
1. Glaciers form from the accumulation of __________________ which is transformed by overlying
pressure to glacial _____________.
Obj. 3
1. The force that causes glaciers to move downhill is ______________________.
Obj. 4
1. Motions of ice
a. Advance________________________________________________________________________
b. Retreat__________________________________________________________________________
Obj. 5
Velocity of Ice
Side View
Overhead View
Obj. 6
1. Effects of glaciations on landscape:
a. Till _____________________________________________________________________________
b. Drumlins_________________________________________________________________________
c. Eskers___________________________________________________________________________
d. Moraines________________________________________________________________________
e. Kettle Lakes______________________________________________________________________
Obj. 7
1. Erosional Features
a. Valley Shape______________________________________________________________________
b. Great Lakes_______________________________________________________________________
c. Finger Lakes______________________________________________________________________
d. Striations_________________________________________________________________________
e. Mountain Features: (Horn, Aretes, Cirques, “U” Shaped Valleys, Hanging Valleys.
During Alpine Glaciation
After Alpine Glaciation
Obj. 8
1. Glaciers deposit ______________________ sediment of _________ sizes.