Item 4 Part A How can water cause mechanical weathering? Hints When water within

Question

Item 4 Part A How can water cause mechanical weathering? Hints When water within fractures in a rock freezes, it expands, which applies pressure to the portions of rock immediately around it. This pressure breaks off pieces of the rock Water in the fracture of a rock can dissolve and carry away the weaker minerals along the surfaces of the fracture. When water in a fracture of a rock evaporates, the water vapor expands against the walls of the fracture, breaking pieces off the rock When water in a fracture of a rock freezes, it contracts, so that the rock around the fracture breaks when another force hits it Water washes sediment off of rocks by a single grain at a time.

Explanation / Answer

A) when water within fractures in a rock freezes, it expands, which applies pressure to the portions of the rock immediately around it.This pressure breaks off pieces of the rock

Mechanical weathering is the process of breaking big rocks into little ones. This process usually happens near the surface of the planet. Temperature also affects the land. The cool nights and hot days always cause things to expand and contract. That movement can cause rocks to crack and break apart.

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