Geography Quiz 01 Flashcards
Weathering of a mountain has occurred on both sides, creating a steep sided peak.
Horn
Jagged mountain valleys become smooth and u-shaped after the glacier retreats. The ice (and rocks in it) scrape the valley floor and sides.
U-Shaped Valley
Rocks in glaciers carve long grooves in the bedrock, direction of grooves shows which way the glacier traveled
Striations
Bowl-Shaped depression where the glacier starts, created by physical weathering and weight of glacier.
Cirque
Material picked up and carried by glacier, made up of very fine particles of sand, to huge boulders.
Till
Ridges of till left at the front or sides of a glacier as it retreats, and shows how far it advanced
Moraine
Avocado shaped hills that occur in clusters. Used for farming due to the soil deposits, and are mined for gravel.
Drumlin
Large boulder carries by the ice to a spot where it is dropped. Easily spotted, since they are usually unlike the rock around them.
Erratic
A large sinious ridge of sand and gravel deposited by water flowing under a glacier or ice sheet
Esker
When ice chunks fall off a retreating glacier they are covered in sediment. The ice eventually melts causing a depression.
Kettle Lake
Steep mounds or conical hills built by material dropped in holes in the ice.
Kame
The earth’s crust is depressed as a result of the weight of the ice. When the ice melts the surface slowly bounces back. It is still going on.
Isostatic Rebound