Formation of U-Shaped Valley
Terms in this set (12)
Water fills cracks in rocks. It freezes, expands and causes rock to shatter.
Rocks become frozen to ice and are ripped out as the ice moves.
Rocks embedded in the ice scrape across the landscape.
This is the type of valley you get BEFORE glaciation.
Very steep sides
Plucking and frost shattering cause this on the valley sides.
Flat valley floor
Abrasion causes this on the valley floor.
This is the force that causes the glacier to move.
Small stream that is left on the floor of the U-shaped valley once the glacier has retreated.
Large body of water that is left on the floor of the U-shaped valley once the glacier has retreated.
Shape of the valley AFTER glaciation.
Steep valley sides
Plucking and frost shattering cause this on the valley sides
This feature forms when a smaller tributary glacier joins a bigger glacier. A waterfall is often left after the glacier has retreated.