Glacial ice that is lost through evaporation or melting.
What is ablation?
100
A large mass of ice that moves or has moved over land.
What is a glacier?
200
Huge chunks of floating fresh-water ice that break off a glacier or ice shelf.
What are icebergs?
200
Firn
What is snow that survives one melt season?
200
These glaciers move outward in all directions from a central point.
What are continental glaciers?
200
Glaciers are also found on this planet.
What is Mars?
200
A ridge of till that has built up by a retreating glacier along its sides and front end.
What is a moraine.
300
Valley (alpine) glaciers and continental glaciers.
What are the two main types of glaciers?
300
Put these steps of glacial formation in correct order.
A. It begins to flow outwards and downwards under the
pressure of its own weight.
B. Snow falls.
C. The snow turns to ice.
D. Falling snow accumulates over time.
What is B,D,C,A.
300
Flow down valleys.
What is the direction valley (alpine) glaciers move?
300
A bowl-shaped depression formed by a melting block of ice that is filled with water.
What is a kettle lake?
300
The front edge of a glacier.
What is the terminus.
400
Near the poles, and on all of the world's continents except Australia.
Where can glaciers be found?
400
Process by which snow and firn become ice.
What is compressed by the overlying snow into a mass of ice.
400
This must be present for a glacier to slide.
What is water?
400
The process in which large chunks of ice break off a glacier.
What is calving?
400
Group of large lakes in the United States that were formed by a large continental glacier that melted and retreated.
What are the Great Lakes.
500
Must have high snowfall in winter and cool temperatures in summer.
What type of climatic conditions are needed for glaciers to form?
500
During the last Ice Age (10,000 years ago), glaciers covered this percentage of the earth's surface.
What is 30 percent.
500
Internal stress builds up in the ice which cannot be relieved by deformation creates these.
What are crevasses?
500
More ice is being ablated at the terminus than is being transported by flow into that region.
What is glacial retreat?
500
Moraines, eskers, and drumlins.
What are three landforms created by glaciers that have retreated or disappeared?