Types of Erosion

Question 1

wave quarrying

Answer 1

when breaking waves hit rock faces with a pressure of 30 tonnes and pull rocks away from the cliff face

Question 2

abrasion

Answer 2

when pebbles grind along a rock platform like sandpaper so over time the rock becomes smooth

Question 3

attrition

Answer 3

when rocks that the sea is carrying knock against each other and break apart to become smaller and more rounded

Question 4

solution

Answer 4

as the sea water is mildly acidic it dissolves certain types of rock such as limestone

Question 5

hydraulic action

Answer 5

the force of water particularly in rivers or waves that erodes the banks or bed of a river or the cliffs of a coastline

Question 6

corrosion

Answer 6

chemical erosion due to the waters acidity

Question 7

mechanical weathering

Answer 7

an example is freeze thaw when water seeps into cracks in the rock and expands when it freezes which widens the cracks and will eventually break the rock is this process continues

Question 8

chemical weathering

Answer 8

happens through chemical reactions such as oxidation, as minerals are exposed to the air they oxidise (rust) e.g. iron

Question 9

biological weathering

Answer 9

when roots grow into the cliff and binds and burrows its roots