Where do crevasses form in glaciers quizlet?
Crevasses form on the upper portion of the glacier because when a glacier moves over irregular terrain, the zone of fracture is subjected to tension, which forms the crevasse.
Do crevasses form at the terminus?
Types of Crevasses Form in the direction of a glacier flow, and where ice slowly spreads out sideways to cover a larger area. Commonly found near the terminus of glaciers (glacier termini).
What are crevasses and where do they form quizlet?
Crevasses are cracks that form in the zone of fracture at the top of the glacier. They form when tension is created as a result of the glacier moving over irregular terrain.
What is a crevasse in a glacier?
Crevasses are cracks that form in glacier ice when the glacier is put under too much stress for it to deform by flowing.
How do crevasses form in glaciers?
Crevasses also form when different parts of a glacier move at different speeds. When traveling down a valley, for example, a glacier moves faster in the middle. The sides of a glacier are slowed down as they scrape against valley walls. As the sections advance at different speeds, crevasses open in the ice.
How do crevasses form in glaciers quizlet?
when a valley glacier comes to a steep slope, cracks called crevasses form. They form because the ice near the surface of the glacier is rough and rigid. The ice responds to the movement of the ice underneath it by breaking.
What is a crevasse and how does it form?
A crevasse is a deep, wedge-shaped opening in a moving mass of ice called a glacier. Crevasses usually form in the top 50 meters (160 feet) of a glacier, where the ice is brittle. Below that, a glacier is less brittle and can slide over uneven surfaces without cracking.
What is a glacial crevasse quizlet?
Glacial Crevasses. A crevasse is a deep crack, or fracture, found in an ice sheet or glacier, as opposed to a crevice that forms in rock.
How is a crevasse formed?
Crevasses also form when different parts of a glacier move at different speeds. When traveling down a valley, for example, a glacier moves faster in the middle. The sides of a glacier are slowed down as they scrape against valley walls. As the sections advance at different speeds, crevasses open in the ice.
How is a crevasse formed geography?
Crevasses also form when different parts of a glacier move at different speeds. When traveling down a valley, for example, a glacier moves faster in the middle. The sides of a glacier are slowed down as they scrape against valley walls. As the sections advance at different speeds, crevasses open in the ice.
What causes a crevasse to form quizlet?
What causes a crevasse to form? When ice flows around a bend or over an obstacle, it is stretched and torn, causing large cracks to form.
Where do crevasses form group of answer choices at the terminus in the zone of fracture below the zone of fracture in icebergs?
Crevasses form on the upper portion of the glacier because when a glacier moves over irregular terrain the zone of fracture is subjected to tension which forms the crevasse.