Weathering & Erosion (geomorphological processes)

Question 1

What type of weathering is shown in this picture?

Answer 1

Onion skin weathering

Question 2

What word fits into the space below?

……………………………………….. is the breakdown of rock. Unlike erosion, the rock is broken apart but then remains where it is.

Answer 2

Weathering

Question 3

How would you explain freeze thaw weathering?

Answer 3

Water gets into a crack in the rock. If the temperature drops below freezing, the water will freeze and expand, putting pressure on the rock around it. When the water freezes and melts repeatedly, the rock eventually falls apart.

Question 4

Which type of weathering involves plants, trees or burrowing animals and insects?

Answer 4

Biological weathering

Question 5

Can you name the four main processes of erosion?

Answer 5

1. Hydraulic action
2. Abrasion
3. Attrition
4. Corrosion

Question 6

Which process of erosion makes rocks and pebbles smaller as they bump into each other?

Answer 6

Attrition

Question 7

How would you explain corrosion?

Answer 7

Alkaline rocks (such as chalk and limestone) are dissolved by acid in the water.

Question 8

Which process of erosion is taking place when pebbles carried by the water grind against the river bank or cliff, like sand paper.

Answer 8

Abrasion

Question 9

……………………………………………….. is the sheer force of the water pounding against the rock.

Answer 9

Hydraulic action