geomorphical processes

Question 1

what is chemical weathering

Answer 1

rain and seawater contain chemicals that disolves the rock type, altering its structure and breaking it down.

Question 2

examples of chemical weathering

Answer 2

solution
oxidation
hydration
hydrolysis
carbonation

Question 3

what’s solution

Answer 3

weak carbonic acid in the seawater dissolves rock and breaks it down, particularly rocks such as limestone as they contain calcium.

Question 4

what’s oxidation

Answer 4

addition of oxygen and minerals, which produces iron oxide and increases volume. this also causes iron rich rocks to rust.

Question 5

what’s the definition of weathering.

Answer 5

breakdown of rock in situ.

Question 6

hydration

Answer 6

breakdown of minerals to form new clay minerals, due to water and dissolved carbonate.

Question 7

hydrolysis

Answer 7

mildly acidic water reacts with the minerals in the rocks, causing them to breakdown further.

Question 8

carbonation

Answer 8

rainwater mixes with co2 in the atmosphere causing acid rain. this attacks the calcium, carbonate in the rocks, causing them to break down. most likely to occur in cooler areas as they have more co2 in the atmosphere.

Question 9

what’s biological weathering

Answer 9

breakdown of rocks in situ due to living or once lived organisms, therefore contributing to erosion.

Question 10

examples of biological weathering.

Answer 10

tree root: seeds fall into the cracks of rocks and grows, causing them to expand and deepen the crack.