Mechanical Weathering

Question 1

occurs when a rock splits of breaks in to smaller pieces of the same material without changing its composition

Answer 1

Mechanical or Physical Weathering

Question 2

occurs because of the property of water that causes it to expand when frozen

Answer 2

Ice Wedging or Frost Action

Question 3

occurs in rocks rich in shale and mudstone

Answer 3

Welting and Drying

Question 4

• may also cause mechanical weathering
• the roots of the plants grow into cracks in rocks which causes to wedge the rock apart

Answer 4

Roots of Plants

Question 5

digs holes in the soil which causes the allow the wind and water to reach the bed rock and weather it

Answer 5

Burrowing Animals

Question 6

by expansion of the rock body itself as a result of presure unloading

Answer 6

Sheet Jointing