Coasts

Question 1

What is Hydraulic action?

Answer 1

When water hits the cliff forcing pockets into cracks.

Question 2

What is Corrosion?

Answer 2

The dissolving of rocks and minerals by sea water.,

Question 3

What is Abrasion?

Answer 3

When the waves pick up stones and hurl them at the cliff.

Question 4

What is Attrition?

Answer 4

When a material is carried by the waves and becomes rounded.

Question 5

What Biological weathering?

Answer 5

When the roots of vegetation grow into a crack as the tree gets larger the crack is forced to be larger.

Question 6

What is Acid rain?

Answer 6

When the air is polluted the rain becomes polluted which reacts with the weak minerals to dissolve.

Question 7

How is a wave cut platform formed?

Answer 7

• Weathering weakens the top of the cliff
• Hydraulic action causes causes a wave cut notch
• The notch causes increases in size and causes the cliff to collapse
• The sea carries the rubble away forming a wave cut platform
• This process continues and the cliff continues to retreat

Question 8

How is a cave, arch, stack, stump formed?

Answer 8

• Hydraulic action causes a crack in the cliff face to enlarge and create a cave
• This cave is formed further by hydraulic action and abrasion
• Over time a arch is formed
• The arch starts to erode and collapse due to hydraulic action, abrasion and biological weathering and creates a stack
• The stack gets attacked at the base by hydraulic action, abrasion, corrosion and biological weathering which breaks them down into stacks.