EVERYDAY SCIENCE

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EARTH SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of these is the BEST example of physical weathering?
A
insects eating a dead tree
B
a bulldozer pushing soil
C
ice fracturing a stone
D
acid rain dissolving limestone
Explanation: 

Detailed explanation-1: -Expert-Verified Answer. The best example of physical weathering is ice fracturing a stone. Explanation: Physical weathering is the phenomenon of breaking a rock due to temperature, pressure or heat without affecting its chemical composition.

Detailed explanation-2: -Frost weathering is the collective name for those forms of physical weathering that are caused by the formation of ice within rock outcrops. It was long believed that the most important of these is frost wedging, which results from the expansion of pore water when it freezes.

Detailed explanation-3: -Physical Weather Examples Physical weathering occurs when rock is broken down through mechanical processes such as wind, water, gravity, freeze-thaw cycles, or the growth of roots into rock.

Detailed explanation-4: -One common type of physical weathering is ice or frost wedging. Frost wedging is a natural result of the fact that water expands when it freezes. If water gets into a fracture in a rock and freezes, it can expand and put pressure on the rock from within the fracture.

Detailed explanation-5: -Swiftly moving water. Rapidly moving water can lift, for short periods of time, rocks from the stream bottom. Ice wedging. Ice wedging causes many rocks to break. Plant roots. Plant roots can grow in cracks.

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