1. What is abrasion?
- occurs in areas where temperatures rise during the day but drop below freezing at night for a substantial part of the winter.
- is a series of processes that operate under a patch of snow leading to the disintegration of the rock surface.
- occurs when the material the glacier is carrying rubs away at the valley floor and sides.
- involves the glacier freezing onto and into rock outcrops.
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Other questions in this quiz
2. what are the types of moraines?
- recessional, medial, lateral, terminal
- push, recess, medieval, stop
- recess, evil, medial, shunt
3. what can be created from frost heave?
- an esker
- squares and triangles
- stone strips and polygons
- an irregular permafrost pattern
4. What is the zone of ablation?
- where outputs exceed inputs and therefore more mass is lost rather than gained. This is the lower part of the glacier.
- where inputs exceed outputs and therefore where more mass is gained than lost over a year. This is the upper part of the glacier.
- the difference between the total accumulation and the total ablation during 1 year.
- a negative balance in summer where ablation exceeds accumulation and the reverse in winter.
5. what is a varve?
- deposits with distinct layering
- sand and pebbles
- a bad human name
- a stream discharge increase