Coasts - What affects the rate of coastal erosion?

Question 1

Outline 4 factors which affect the rate of coastal erosion.

Answer 1

Geology

Resistance of Rock

More resistant rock such as granite will erode more slowly than soft, less resistant rock such as chalk.

Rock’s Structure

Rocks with lots of cracks and faults will erode faster than those without

Strength of Wave

Length of Fetch

Waves which have travelled over larger distances of water will erode faster than those with shorter distances because they have been getting energy from the wind for a greater distance.

Wind Speed

The stronger the wind, the more energy it gives to the waves. The more powerful the waves, faster the rate of erosion.