Name: ____________________________________
Class: _____________
Date: _____________
Self Assessment: Glaciers
1. Glacial erosion can change the shapes of mountains considerably. The carving of glacial troughs and
cirques produces relief features such as _____.
a) fiords and hanging valleys
b) horns and arêtes
c) drumlins and kames
d) eskers and end moraines
2. How do kettle lakes form?
a) Areas bordered by terminal and lateral moraines fill with meltwater, forming shallow, broad lakes.
b) Blocks of ice buried in glacial drift melt, leaving depressions in flat glacial sediment that fill with
water.
c) Glacial troughs near oceans become filled with water, creating inlets.
d) Areas of snow accumulation carve out bowl shaped depressions that later become occupied by small
meltwater lakes.
3. What are the two primary mechanisms by which ice inside glaciers flows?
a) basal slip and internal deformation
b) accumulation and wastage
c) upper fracture and lower deformation
d) horizontal pushing and vertical slip
4. Which form of glacial weathering includes direct removal of rock, which may include boulders the size of
houses?
a) ice sculpts
b) abrasion
c) plucking
d) scraping
PAGE 1
Name: ____________________________________
Class: _____________
Date: _____________
Self Assessment: Glaciers
5. Glaciers leave their mark on the landscape through deposition as well as through weathering. What are
three examples of glacial deposition?
a) eskers, parallel scratches, and outwash plains
b) cirques, arêtes, and grooves
c) U shaped valleys, drumlins, and finger lakes
d) moraines, eskers, drumlins
6. Long linear features that reflect water flow in channels that existed under, within, or on top of a glacier are
called _____.
a) eskers
b) kames
c) drumlins
d) moraines
7. Moraines are classified by their positions relative to the glacial ice sheet. What are the classes of moraines?
a) vertical, horizontal, lateral, and slant
b) parallel and perpendicular
c) terminal, lateral, medial, and ground
d) initial, medial, and terminal
8. What percentage of Earth's freshwater is frozen in ice sheets and glaciers?
a) 25%
b) 85%
c) 50%
d) 70%
9. The uppermost zone of a glacier is known as the zone of fracture because crevasses can form there when
the glacier moves over irregular terrain. How deep into a glacier does the zone of fracture penetrate?
a) 5 meters (16.4 feet)
b) 10 meters (32.8 feet)
c) 100 meters (328 feet)
d) 50 meters (164 feet)
PAGE 2
Name: ____________________________________
Self Assessment: Glaciers
10. Below the zone of fracture, ice behaves as a _____.
a) flowing liquid
b) collection of solid chunks
c) plastic material
d) brittle solid
PAGE 3
Class: _____________
Date: _____________
ANSWER KEY
1. b
2. b
3. a
4. c
5. d
6. a
ANSWER KEY Page 1
7. c
8. d
9. d
10. c