ice on land
- Created by: katenixon3107
- Created on: 26-03-15 17:12
View mindmap
- Definitions
- Ice on the land
- How do glaciers shape the landscape?
- Weathering- is the break down of rocks
- Freeze thaw weathering
- 1. Water fills crack in the rock
- 2. The water freezes so crack widens. Volume of water expands when it freezes so the crack is pushed and widened
- 3. Repeated freeze thaw action increases size of crack until rock breaks off
- 2. The water freezes so crack widens. Volume of water expands when it freezes so the crack is pushed and widened
- 1. Water fills crack in the rock
- Freeze thaw weathering
- Erosion- is the wearing away of landscape
- Abrasion- sandpaper effect caused by weight of the ice scouring the valley floor and sides using angular rock material trapped underneath
- results in a smooth, shiny surface
- Plucking
- 1. When meltwater beneath a glacier freezes, bonds glacier base to the rocky surface below
- 2. As the glacier moved any loose fragments of rock are plucked away
- 3.leaves behind jagged rocky surface
- 2. As the glacier moved any loose fragments of rock are plucked away
- 1. When meltwater beneath a glacier freezes, bonds glacier base to the rocky surface below
- Abrasion- sandpaper effect caused by weight of the ice scouring the valley floor and sides using angular rock material trapped underneath
- Plucking
- 1. When meltwater beneath a glacier freezes, bonds glacier base to the rocky surface below
- 2. As the glacier moved any loose fragments of rock are plucked away
- 3.leaves behind jagged rocky surface
- 2. As the glacier moved any loose fragments of rock are plucked away
- 1. When meltwater beneath a glacier freezes, bonds glacier base to the rocky surface below
- Weathering- is the break down of rocks
- Causes of Avalanches
- Heavy Snowfall
- Heavy Rainfall
- Tree Romoval
- Human Factors
- Steep Slopes
- How do glaciers shape the landscape?
- Ice Cap
- A small body of ice (less than 50000km2) usually found in mountainous regions
- The second largest ice sheet on the earth is Greeland
- The snout is the front or lowest part of glacier
- The Largest ice sheet on earth is ANTARCTICA
- The outputs from glacier budget, such as melting and evaporation is ABLATION
- The inputs into the glacier budget such as snowfall and avalanches is accumulation
- is a finger of ice usually extending downhill from an ice cap and occuping a valley
- Glacier
- ice sheet
- a large body of ice completely covering an area of land greater than 50000km
- Ice on the land
- Avalanches
- Are masses of snow,ice and rocks that move downhill at high speeds
- Slab Avalanches are more deadly
- Loose snow Avalanches involve powerdery snow and loose.
- Corrie
- Is a circular rock hollow usually located on a mountainside
- It has a steep and rocky back wall leading to sharp rocky ridges called ARETES
- The front of a corrie is open with a ROCK lip
- After the ice has melted the hollow is usually filled with a small round lake called a TARN
- Formation of a corrie
- Freeze thaw action
- Plucking
- Abrasion
- Rotational Slip
Similar Geography resources:
Teacher recommended
Comments
No comments have yet been made