Question

how does water help in physical weathering​

Answer 1

Hey mate here is ur answer..
Physical weathering is caused by the effects of changing temperature on rocks, causing the rock to break apart. The process is sometimes assisted by water. 

There are two main types of physical weathering:

Freeze-thaw occurs when water continually seeps into cracks, freezes and expands, eventually breaking the rock apart.

Exfoliation occurs as cracks develop parallel to the land surface a consequence of the reduction in pressure during uplift and erosion.
HOPE THIS HELPS U..
@SHARANAYA@

Answer 2

Physical weathering is caused by the effects of changing temperature on rocks, causing the rock to break apart. The process is sometimes assisted by water as it helps to degenerate or break the rock molecules.