What are the two processes that glaciers erode the land?
100
It deposits the sediment eroded from the land creating various land forms.
What happens when a glacier melts?
100
A group of sediment deposited directly by glaciers.
What is a till?
100
One time in the past when continental glaciers covered laege parts of Earths surface.
What is an Ice Age?
200
A valley glacier and a continental glacier.
What are the two types of glaciers?
200
The process by which a glacier picks up rocks as it flows over the land.
What is plucking?
200
Its a small depression that forms when a chunk of ice is left in a glacial till.
What is a Kettle?
200
This is Earths materials deposited by Erosion.
What is sediment?
200
North America
Where did the ice age take place?
300
A glacier that covers much of a continent or island.
What is a continental glacier?
300
The grinding away of rock by other rock particles carried in water, ice, or wind.
What is abrasion?
300
They are potholes that contain water from only part of the year. Each one is a small oasis for small animals.
What are prairie potholes?
300
It is any one of several process in which gravity moves sediment downhill.
What is Mass Movement?
300
9 million years ago.
How many years ago did continental glaciers begin to form in North America?
400
Its a long narrow glacier that forms when ice and snow build up.
What is a valley glacier?
400
Yes, the movement of a glacier changes the land beneath it.
Does the movement of a glacier change the land beneath it?
400
A ridge formed by the till deposited at the edge of a glacier.
What is a moraine?
400
This is the force that opposes the motion of one surface as it moves across another surface.
What is friction?
400
10 thousand years ago!
How long did it take before the glaciers finally retreated?
500
High in mountain valleys temperatures seldom rise above freezing. Snow builds up year after year. The pressure of the weight of more and more snow compacts the snow at the bottom into ice. Once the depth of snow and ice reaches more than 40 to 30 meters gravity begins to pull the glacier down.
How do glaciers move?
500
Yes, the glaciers do carry rocks as it flows.
Can a glacier carry rocks with it?
500
A bird, rabbit, duck, mouse, a prairie dog all use this small oasis.
What is an example of an animal that would use a prairie pothole?
500
A wide sloping deposit of sediment formed where a stream leaves a mountain range.