2.a. Coastal landforms develop due to a variety of interconnected climatic and geomorphic processes.

Question 1

Freeze-thaw ( Weathering)

Answer 1

Water enters the cracks/ joints and expands by nearly 10 percent when it freezes. In confined spaces this exerts pressure onto rocks causing it to split or pieces to break off even in very resitant rock

Question 2

Pressure release Weathering

Answer 2

overlying rocks are removed by weathering and erosion
underlying rock expands and fractures parallel to the surface.

Question 3

Thermal expansion Weathering

Answer 3

Rocks expand when heated and contract when colled. If they experience frqquent cycles of temp change the outer layers may crack and flake off. This is also know as inslation wathering

Question 4

salt crystalisation Weathering

Answer 4

soloutions of salt seep into pore spaces of rock in porous rocks, then the salt preciptates forming crystals. The growth of thses cryals create stress in the rock causing i to disentrigate

Question 5

oxidation Weathering

Answer 5

some minerals in rock react with oxygen, wither in air or water. It becomes soluble in extremely acidic conditions, and the original structure is destroyed.

Question 6

Carbonation Weathering

Answer 6

Rain water combines with dissolved carbon dioxide in the atmosphere to produce a weak carbionic acid, this reacts with calcuim carbonate in rocks such as limestone to produce calcuim bicarbonate which is soluble

Question 7

soloution Weathering

Answer 7

Some salts are soluble in water. Other minerals,
such as iron, are only soluble in very acidic water,
with a pH of about 3. Any process by which a
mineral dissolves in water is known as solution,
although mineral specific processes, such as
carbonation, can be identified