Mass movement/weathering processes

Question 1

Boring Molluscs

Answer 1

Some sea life such as worms, corals and molluscs bore into the side of stone to serve as a base, ultimately weakening and breaking it apart.

Question 2

Frost-shattering

Answer 2

water within gaps in the rock freezes and expands, pushing the jap apart and causing the rock to crack and fall away as it thaws.

Question 3

Bedding planes/Joints

Answer 3

Large flat planes over which upper rock layers sit and slide over during rotational slumping/vertical gaps in the rock separating the rock face into segments.

Question 4

Mass movement

Answer 4

movement of rock and soil down a slope due to gravity

Question 5

Mudflows

Answer 5

movement of oversaturated soil and carried material down a slope in a hardened stream due to rapid and high levels of precipitation.

Question 6

Oxidation

Answer 6

oxygen reacts with minerals in rock, weakening it.

Question 7

Rotational slumping

Answer 7

slump material moves away from the coastline in stacks by sliding down across the slip surface underneath.

Question 8

Salt crystallisation

Answer 8

sea water evaporates in the gaps between rocks, depositing salt crystals which continue to expand, causing it to break away or crack.

Question 9

Sub-aerial processes

Answer 9

the collective name weathering and mass movement process which affect the change and movement of land.

Question 10

Talus

Answer 10

rocky depositional material left behind by a rock fall.

Question 11

weathering

Answer 11

the breaking down of rock or minerals on the earths surface by either biological or mechanical processes.