Weathering And Erosion

Question 1

What are the fluvial processes?

Answer 1

Erosion, transport, deposition

Question 2

How is material transported?

Answer 2

Traction, suspension, saltation and solution resulting in small particles reaching the mouth of the river and into coastal landscape system

Question 3

Similar to coasts, most erosion in a river occurs at times of…

Answer 3

high flow/flood where there is a lot of energy

Question 4

The meeting of fresh and saltwater causes

Answer 4

Flocculation of clay particles

Question 5

Freeze thaw

Answer 5

Water enters cracks. Freezes and expands by nearly 10%. Exerts pressure causing it to split into pieces.

Question 6

Pressure release

Answer 6

When overlying rocks are removed by weathering and erosion, the underlying rock expands and fractures parallel to the surface.

Question 7

Thermal expansion

Answer 7

Rocks expand when heated and contract when cooled. The outer layer flakes off of this occurs regularly.

Question 8

Salt crystallisation

Answer 8

Solution of salt can seep into the pore spaces in porous rocks. Salts precipitate, forming crystals. The growth of crystals creates stress in the rock causing it to disintegrate.

Question 9

Abrasion

Answer 9

Pebbles grind along (sand paper effect)

Question 10

Attrition

Answer 10

When rocks being transported knock against each other. Break apart becoming smaller and rounder

Question 11

Solution

Answer 11

Chemicals in the water dissolve certain types of rocks