Mechanical Weathering

Question 1

Define weathering.

Answer 1

The break down or decay of rocks in its original place.

Question 2

Define mechanical weathering.

Answer 2

The break down of rocks by physical processes producing scree.

Question 3

Describe freeze-thaw.

Answer 3

Water seeps into cracks in a rock. It freezes and widens the crack. The ice then melts and seeps deeper into the rock. This process will repeat until the rock breaks apart.

Question 4

Describe salt-weathering.

Answer 4

When sea water evaporates in cracks and holes salt crystals grow and expand. This puts pressure on the rocks and flakes may eventually break off.