Erosion processes

Question 1

What is abrasion?

Answer 1

pieces of rock are picked up by waves and hit against the bed, beach or cliffs wears them away over time

Question 2

What is attrition?

Answer 2

pieces of bed load (material carried in the water) are hit against one another (breaks apart=smaller more rounded)

Question 3

What is corrosion?

Answer 3

chemical reaction between sea water and susceptible rock (limestone)

Question 4

What is hydraulic action?

Answer 4

causes breakdown of cliffs
force of water being compressed into cracks of rocks
repetition of water in/out cracks leads to breakdown of cliff