Coastal Landscapes and Change - Threshold Test 2

What is the process called when sand and pebbles are picked up by the sea and hurled against the cliffs?

• Corrasion

• Attrition

• Hydraulic Action

• Corrosion

Which type of erosion involves rocks and pebbles hitting against each other, becoming round and smaller?

• Attrition

• Abrasion

• Wave Quarrying

• Corrosion

What happens during hydraulic action?

• Air is forced into cracks, causing them to widen.

• Rocks are dissolved by acidic seawater.

• Sediment is moved along the shoreline.

• Waves hammer the rock surface.

What is the main effect of wave quarrying?

• Directly pulling away rocks from a cliff face

• Dissolving rocks with acidic seawater

• Rounding and smoothing rocks

• Forcing air into cracks

What determines the vulnerability of a rock to erosion?

• The color of the rock

• The resistance of the rock

• The age of the rock

• The location of the rock

Which type of rock is most vulnerable to erosion due to its structure?

• Igneous

• Metamorphic

• Sedimentary

• Volcanic

What is the rate of erosion for igneous rocks like granite and basalt?

• Very fast, 0.5-10cm/year

• Slow, 0.1-0.3cm/year

• Very slow, <0.1cm/year

• Moderate, 1-2cm/year

What happens to a stack when marine erosion continues to attack its base?

• It becomes a mountain

• It collapses into a stump

• It turns into a cave

• It forms a plateau

What is a blowhole a combination of?

• A pot hole on top of a cliff and a cave

• A sand dune and a cave

• A pot hole and a beach

• A cliff and a wave

What process predominantly transports sediment along the coast?

• Longshore drift

• Erosion

• Deposition

• Weathering