Ice Flashcards
glacier
large mass of ice that flows over land due to gravity
valley glacier
smaller glaciers in mountains, make U-shaped valleys
continental glacier
large glaciers that cover large parts of continents (polar ice sheets)
striations
parallel scratches on rock that result from sediments and rocks in glacier carving the rocks (show direction of flow)
drumlins
big teardrop shaped mounds of unsorted sediments left behind by glaciers. They taper in the direction of the glacier’s flow.
erratic
boulders left behind by glaciers after they melt
unsorted sediments
sediments that are left behind by a glacier as a result of the glacier’s bulldozing of the land
till
unsorted glacial sediments
moraine
a deposit of unsorted sediment pushed into place by an advancing glacier
kettle
holes made by blocks of ice in glaciers that eventually melt
Pleistocene Epoch
Earth’s most recent ice age