Landforms Of Erosion

Question 1

Headlands and bays

Answer 1

Formed on discordant coasts.
Headlands are formed when softer rock erodes faster than a more resistant rock which leaves a section of land jutting out.
Bays are areas where the softer rock has eroded away next to the headland.

Question 2

Coves

Answer 2

Formed on concordant coast lines.

A crack in hard rock is formed and water erodes the soft rock more until it gets to the next layer of hard rock.

Question 3

Wave cut platforms and notches

Answer 3

A wave cut platform is a narrow flat area found at the base of a sea cliff. They are formed when destructive waves hit the cliff face which causes undercutting. A wave cut notch is created which enlarges to a cave. The cliff collapses and retreats backwards. The base of the cliff forms the wavecut platform.

Question 4

Caves, arches, stacks and stumps

Answer 4

Caves- water forces it’s way into cracks in the cliff face, material is weathered and eroded away.
Arch- if the cave is formed in a headland, it may break through to the other side, forming an arch.
Stack - the arch will steadily become bigger until it collapses and leaves a stack
Stump- the stack is weakened at the base causing it to collapse

Question 5

Blowhole

Answer 5

Formed when sea caves grow towards the land and upward. A hole at he top of the cave is created so water and pressure can be expelled.

Question 6

Geo

Answer 6

Formed by waves eroding the lower part of a cliff. A depression or sea cave may form. The cliff face above the sea cave can erode and collapse to form a geo. Along a joint the sea will cut inland widening the gap to form a narrow steep sided inlet.