Chapter 16 Flashcards
What is a glacier?
Landed based body of ice that is in motion
Is a glacier an open or closed system?
Open
Input: snow
Output: Ablation (loss of mass)
Storage: Snow, ice, fern
What are the two general layers of ice?
Zone of Brittle Flow
Zone of Plastic Flow
Where is the Brittle Flow?
It the uppermost layer and thinner layer, movement causes crevasses
Where is the Zone of Plastic?
On the lower layer of the glacier, also the thickest part
What is calving?
When glaciers give birth to icebergs
What are whale shaped hills called?
Drumlins
The lower course of a stream would be dominated by….
Deposition
Milankovitch theory helps explain…
Glacial and interglacial periods
Mass movements is aggravation or degradation?
Degradation
What is regolith?
Broken Bedrock
Loess soil is created by aggradation or degradation?
Aggradation
