types of weathering

Question 1

weathering

Answer 1

the breaking down of rocks by the action of weather, plants, animals and chemical processes

Question 2

biological weathering

Answer 2

roots burrow down weakening the structure of the rock until it breaks away

Question 3

biological weathering process

Answer 3

1. plant roots can get into small cracks in the rock
2. as the roots grow the cracks become larger
3. this causes small pieces of rocks to break away

Question 4

chemical weathering

Answer 4

rainwater and seawater can be weak in acid meaning overtime the rocks become dissolved in acid in the water

Question 5

mechanical (physical) - freeze thaw weathering

Answer 5

this occurs when rocks are porous or permeable

Question 6

freeze thaw process

Answer 6

1. water enters the crack in the rock
2. water freezes and expands widening the crack
3. ice melts and water goes deeper into the crack
4. process repeats until the rock splits