Glaciers

Front 1

A mass of ice on land consisting of compacted, recrystallized snow that flows under the influence of gravity

Back 1

Glacier

Front 2

Glaciers are effective agents of

Back 2

Erosion, Transportation and Deposition

Front 3

Glaciers are most extensive in ____ regions

Back 3

Polar

Front 4

Compacted mass of granular snow, transitional between snow and glacier ice is called

Back 4

Firn

Front 5

Remaining pore space is reduced and granules forced together recrystallize into

Back 5

Glacial ice

Front 6

Deformation involving no fracturing

Back 6

Plastic flow

Front 7

_____ is facilitated by the present of water which reduces friction

Back 7

Basal slip

Front 8

Thin film of meltwater that develops along the base from the pressure of the flacier facilitates

Back 8

Basal sliding

Front 9

In the ______, or upper part of the glacier the ice grains ride along passively

Back 9

Rigid zone

Front 10

A glacier that is confined to a valley and flows from higher to lower elevation

Back 10

Valley Glacier

Front 11

A mass of ice that is not restricted to a valley but covers a large area of land

Back 11

Continental Glacier

Front 12

___ are found in mountain highlands in Iceland and on islands in the Arctic Ocean

Back 12

Ice cap

Front 13

The _______ is the part of the glacier with a perenniel snow cover

Back 13

Zone of accumulation

Front 14

The ______ is the zone where ice is lost by melting, evaporation or calving

Back 14

Zone of ablation(wastage)

Front 15

The boundary between the Zone of Accumulation and Zone of Wastage is called the

Back 15

Equilibrium Line

Front 16

The _______ is used to determine whether a glacier has a positive or negative budget.

Back 16

Equilibrium line

Front 17

Glaciers with a positive budget push outward and downward at their edges and are called

Back 17

Advancing Glaciers

Front 18

Glaciers with a negative budget and their edges melt back are called

Back 18

Receding Glaciers

Front 19

Glaciers in ______ climates move faster.

Back 19

Temperature

Front 20

Glaciers in ________ move slower.

Back 20

Cold

Front 21

A _____ develops as a glacier moves at different rates as a response to changes in the steepness in the underlying rock.

Back 21

Crevass

Front 22

As meltwater moves into cracks and refreezes, pieces of the rock are broken loose and frozen in the process known as

Back 22

Plucking

Front 23

Pebbles and boulders that are given a flat surface by abrasion are considered

Back 23

Faceted

Front 24

Bedrock under a glacier is polished by fine particles and scratched by larger particles in a feature known as being

Back 24

Striated

Front 25

_______ on bedrock indicate the direction of ice movement

Back 25

Striations

Front 26

Grinding of a rock across rock produces a powder called

Back 26

Rock flour

Front 27

A ____ valley is character of glacial erosion.

Back 27

U shaped

Front 28

A ___ valley is a characteristic of stream erosion.

Back 28

V Shaped