coastal processes (terrestrial)

Question 1

weathering

Answer 1

• in-situ = in og place
• no movement
• sub-aerial = not linked to sea

Question 2

mechanical weathering

Answer 2

• physically breaking rocks
• e.g. freeze thaw:
  1. water gets into crack
  2. water freezes = expands
  3. crack = wider
  4. rock breaks

Question 3

chemical weathering

Answer 3

• chemically breaking rocks
  1. rainwater = acidic
  2. acid reacts with rock
  3. rock breaks
  e.g. limestone

Question 4

biological weathering

Answer 4

• worn away by living organisms
• trees:
  1. trees grow within cracks
  2. roots grow bigger
  3. crack - bigger/ wider
  4. rock breaks

Question 5

mass movement

Answer 5

• downhill movement of material
  slumps:
• weaker rock
• saturated areas
• saturated soil moves
• down slope in 1 piece
• leaves curved surface