ESS
Grade-4
Easy
Question
_________ causes weathering of rocks in glacier.
- Wind
- Ice
- Plants
- All of the above
Hint:
Glacier is made up of?
The correct answer is: Ice
The correct option is b)Ice.
Ice wedges are defined by the physical weathering of rock, where the surface within rock cracks fills with water, freezes, and eventually expands. Widening cracks and build-up of pressure within the rock cause it to expand and fracture. Ice wedging is also called frost wedging.
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