OAKA Books - Coasts 1-25

Coastal erosion is...

• the wearing away of material.

• the movement of material up, down and along the coast.

• the dropping of eroded material.

Deposition is...

• the wearing away of material.

• the movement of material up, down and along the coast.

• the dropping of eroded material.

Transportation is...

• the wearing away of material.

• the movement of material up, down and along the coast.

• the dropping of eroded material.

Which statement is true?

• Soft rock erodes faster than hard rock.

• Hard rock erodes faster than soft rock.

• Soft and hard rock erode at the same speed.

What creates waves?

• Wind

• Tides

• The sun

The stronger the wind the .... the waves.

The 4 types of erosion are:

• Abrasion, Attrition, Hydraulic Action, Corrosion

• Abrasion, Traction, Hydraulic Action, Friction

• Solution, Attrition, Hydraulic Action, Limestone

Abrasion is where...

• Waves throw sand and pebbles against the cliff.

• Waves smash pebbles and rocks into each other.

• Waves force air and water in the cracks in a cliff.

• Weak acid in sea water dissolves the rocks.

Attrition is where...

• Waves throw sand and pebbles against the cliff.

• Waves smash pebbles and rocks into each other.

• Waves force air and water in the cracks in a cliff.

• Weak acid in sea water dissolves the rocks.

Hydraulic Action is where...

• Waves throw sand and pebbles against the cliff.

• Waves smash pebbles and rocks into each other.

• Waves force air and water in the cracks in a cliff.

• Weak acid in sea water dissolves the rocks.