Geography Mid Years Flashcards
Scree
Loose rock the fall for the back wall after the glacier has melted.
Why does corrie face north?
Because there are the least solar insolation.
Moraines
Rocks deposited by glacier at the rock lip
How does snow turns into ice
It compacks and compresses to squeeze the air out.
How deep does the ice need to be to move down due to gravity
30 meter
Freeze thaw
When melt water flow into cracks of the wall, then it freeze and expand to break open the rocks.
Plucking
Ice freeze over the surface of loose rocks, then plucks the rocks out when the glacier moves
Abrasion
Rocks become entrained in the ice and it can scrap the bottom of the glacier.
How does ice move in a glacier? (The name of the circular movement)
Rotational slip
Rock lip
In the front of the glacier, ice thins and the erosion rate slows down and it creates a raised lip.
Tarn
The melt water that forms a lake from the glacier melting.