10.4 Coastal erosion landforms Flashcards Preview

GSCE Geography AQA Paper 1 > 10.4 Coastal erosion landforms > Flashcards

Flashcards in 10.4 Coastal erosion landforms Deck (10)
Loading flashcards...
1
Q

What is a landform?

A

➢ Is a feature of the landscape that has been formed or sculpted by processes of:
➢ erosion
➢ transportation
➢ deposition

2
Q

What happens when waves come in contact with resistant hard rock such as granite and chalk?

A

➢ Form cliffs and headlands

3
Q

What happens when waves come in contact with less resistant rocks such as clay and sand?

A

➢ Forms bays

➢ Forms low-lying stretches of coastline

4
Q

What are faults?

A

➢ Cracks in rocks

5
Q

What is included in geological structure?

A

➢ Includes the way that layers of rocks are folded or tilted

6
Q

What is a wave-cut platform?

A

➢ A gentle sloping rocky platform

7
Q

What happens when waves break against a cliff?

A

➢ Erosion wears away the cliff to form a wave-cut notch
➢ Over hundreds of years the notch will get deeper
➢ Which undercuts the cliff and collapses

8
Q

How are caves formed?

A

➢ Lines of weakness in a headland - such as faults are weak to erosion
➢ The energy of the waves wears away the rock along a line of weakness to form a cave
➢ Process of hydraulic action and abrasion widen the joint or a fault to form a cave

9
Q

How are arches formed?

A

➢ When overtime erosion may lead to two back-to-back caves breaking through a headland to form an arch

10
Q

How is a stack formed?

A

➢ Gradually the arch is enlarged by erosion at the base and by weathering processes such as freeze-thaw which is acting on the roof
➢ Eventually, the roof will be working away and collapses to form an isolated pillar of rock know as a stack

Decks in GSCE Geography AQA Paper 1 Class (54):