ESS
Grade-4
Easy
Question
__________ is the erosion and transportation of pieces of rocks.
- Abrasion
- Plucking
- Mass movement
- Arete
Hint:
The meaning of the word is to take or remove something from a place.
The correct answer is: Plucking
The correct option is b) Plucking.
- There are two main processes of glacial erosion. The first is plucking, defined as the erosion and transport of large rocks.
- When a glacier crosses land, water beneath the glacier melts and seeps into cracks in the underlying bedrock.
- This water freezes and melts, weakening the bonds that hold rock fragments together. The resulting rock can be stripped from its rocky base and easily transported along a moving glacier.
- Plucking removes rocks and changes the landscape.
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ESS
U-shaped valleys are also called __________.
U-shaped valleys are also called __________.
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