Glaciers

Question 1

What is the zone of accumulation?

Answer 1

Place where glacier is being added to^^
Snow falls here 🥶❄️☃️

Question 2

What is a snout?

Answer 2

End of glacier.
Where ablation takes place (makes glacier smaller)

Question 3

(..?..)stream is located where the ice melts and turns into water and flows away.

Answer 3

MELTWATER

Question 4

What altitude is at the bottom of a glacier?

Answer 4

Low altitude

Question 5

Name the 4 types of ablation and what they involve.

Answer 5

Calving- breaking of ice chunks from the edge of a glacier
Sublimation- ice becomes vapour
Evaporation- water is heated into vapour
Melting- ice is melted to become water

Question 6

What is weathering?

Answer 6

Break down of rocks without transport or movement

Question 7

What is erosion?

Answer 7

Wearing away of rocks during or because of TRANSPORT
WATER- river, sea
WIND- desert
ICE- glaciers

Question 8

WEATHERING: freeze thaw: describe the process

Answer 8

1) Crack in rock in day, fills with water
2) At night temperature falls below 0°c WATER—>ICE. Expands by 9% so pushes crack open—> bigger
3) During day, ice melts- contracts falls further into crack.
4) rock splits in 2

Question 9

EROSION: abrasion: explain the process

Answer 9

Small rocks, sand, gravel embedded in the glacier as the glacier moves it wears away the valley floor and valley sides acting like sandpaper.

Question 10

EROSION: plucking: explain the process

Answer 10

Glacier melts due to pressure and refreezes around a sticking out rock. As the glacier moves it plucks the rock out and carries it with it.