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Glossary of Glacier Terms, Quizzes of Geology

Definitions for various terms related to glaciers, including continental glaciers, mountain glaciers, basal sliding, plastic deformation, crevasse, zone of accumulation, zone of ablation, equilibrium line, glacial advance, glacial retreat, plucking, glacial abrasion, moraines, end moraine, glacial till, erratic, drumlin, and esker.

Typology: Quizzes

2010/2011

Uploaded on 05/05/2011

z125672
z125672 🇺🇸

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TERM 1
Mountain Glaciers
DEFINITION 1
Glaciers that flow from high to low elevation in mountain
settings.
TERM 2
Continental Glaciers
DEFINITION 2
Vast ice sheets covering large land areas. Flows outward
from thickest part of the sheet.
TERM 3
Basal Sliding
DEFINITION 3
The act of a glacier sliding over the bed before it due to
meltwater under the ice acting as a lubricant.
TERM 4
Plastic Deformation
DEFINITION 4
The mass of ice slowly changes shape internally; glaciers that
are frozen to the ground.
TERM 5
Crevasse
DEFINITION 5
A deep crack in an ice sheet or glacier.
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Mountain Glaciers

Glaciers that flow from high to low elevation in mountain

settings.

TERM 2

Continental Glaciers

DEFINITION 2

Vast ice sheets covering large land areas. Flows outward

from thickest part of the sheet.

TERM 3

Basal Sliding

DEFINITION 3

The act of a glacier sliding over the bed before it due to

meltwater under the ice acting as a lubricant.

TERM 4

Plastic Deformation

DEFINITION 4

The mass of ice slowly changes shape internally; glaciers that

are frozen to the ground.

TERM 5

Crevasse

DEFINITION 5

A deep crack in an ice sheet or glacier.

Zone of Accumulation

Area of net snow addition in a glacier.

TERM 7

Zone of Ablation

DEFINITION 7

Area of net snow loss in a glacier.

TERM 8

Equilibrium Line

DEFINITION 8

The line that the two glacial zones meet.

TERM 9

Glacial Advance

DEFINITION 9

The rate at which ice accumulates in the zone of

accumulation exceeds the rate at which ablation occurs.

TERM 10

Glacial Retreat

DEFINITION 10

The rate at which ice accumulates in the zone of

accumulation is exceeded by the rate at which ablation

occurs.

Erratic

Boulders dropped by glacial ice. Often carried long

distances.

TERM 17

Drumlin

DEFINITION 17

Long aligned hills of molded till.

TERM 18

Esker

DEFINITION 18

Long sinuous ridges of sand and gravel.