Chapter 15 Vocabulary: Glaciers
Write each definition in YOUR OWN WORDS and draw a picture to illustrate the word.
Glacier – A large mass of ice and snow that exists year-round and moves under the influence of gravity.
Continental Glacier – A large sheet of ice that covers a large part of a continent.
Valley Glacier – A long, slow-moving, wedge-shaped glacier that moves within valley walls.
Ice cap – A dome-shaped glacier that covers an area smaller than 50,000 square kilometers.
Crevasse – A great fissure or crack in a glacier
Till – Unsorted and un-stratified rock material deposited directly by glacial ice.
Moraine – A deposit of till left behind when a glacier retreats.
Striations – Long, parallel scratches left on rocks and bedrock by glacial movement.
Glacial Valley – A U-shaped valley formed by glacial erosion.