Glaciers

Question 1

What are glaciers?

Answer 1

GLACIERS ARE MASSIVE SHEETS OF ICE THAT SLOWLY MOVE ACROSS THE EARTH, CHANGING THE LANDSCAPE

Question 2

How are glaciers formed?

Answer 2

More snow builds up in the winter than melts in the summer. The snow compresses into FIRN (like packed snowballs). Lower layers turn to SOLID ICE under the weight

Question 3

What are the two types of glaciers?

Answer 3

Alpine Glacier, Continental glacier

Question 4

An Alpine Glacier is

Answer 4

A glacier that is located in a mountainous region that moves slowly downward in elevation (Ice moves down the mountain)

Question 5

A Continental Glacier is

Answer 5

A glacier that occupies a large piece of land (e.g. Greenland)

Question 6

What causes glaciers to move?

Answer 6

WEIGHT and flow

Question 7

What are things formed by glaciers? (8)

Answer 7

U-Shaped valley, Till, drumlin, Esker, Kettle lake, Moraine, Erratic, and Striations

Question 8

A U-Shaped valley is

Answer 8

Formed by an alpine glacier moving down a valley and scraping the walls. This leaves a characteristic “U” shape to the valley.

Question 9

Till is

Answer 9

Material such as loose clay and gravel that gets deposited by the melting ice of a glacier (The glaciers carry them as they move)

Question 10

A Drumlin is

Answer 10

A tear drop shaped hill that runs parallel to the flow of ice. They point in the direction of ice flow and can be several kilometers long.

Question 11

An Esker is

Answer 11

A winding ridge of till deposited by a stream flowing in and under a melting glacier.

Question 12

A Kettle lake is

Answer 12

A depression filled with water that was formerly occupied by a block of stranded ice

Question 13

Moraines are

Answer 13

Landforms made of till

Question 14

An Erratic is

Answer 14

A boulder-sized rock dumped by a glacier. The rock is usually of a different type than the surrounding rock

Question 15

Striations are

Answer 15

Grooves carved into the bedrock by pebbles and cobbles carried at the bottom of a glacier.