(Slope Processes) - Xtra

Question 1

How do slopes vary w climate?

Answer 1

• humid areas: rounder due to chemical weathering, soil creep + fluvial transport
• arid regions: jagged or straight due to mechanical weathering + sheetwash

Question 2

What does geological structure include?

Answer 2

• faults, angle of dip + vulcanicity

Question 3

What do geological structures influence?

Answer 3

• strength of a rock + create lines of potential weakness in it

Question 4

What does rock type + character affect?

Answer 4

• vulnerability to weathering + degree of resistance to downslope movement

Question 5

What does the structure + texture of soil determine?

Answer 5

• how much water it can hold
• e.g. clay soils > sandy soils
• deep clay on slope w veg. removed: little resistance to mass movement

Question 6

What does aspect refer to?

Answer 6

• direction a slope faces

Question 7

How can veg. dec. overland runoff?

Answer 7

• through interception + storage of moisture

Question 8

How can veg. inc. risk of big landslips?

Answer 8

• dense forests dec. surface wash: build up of soil between trees: deepens regolith + inc. potential for failure