Ms Pires' Coastal Deposition Quiz

Which condition is most necessary for deposition to occur along a coastline?

• Increased wave height

• Reduced wave energy

• Increased fetch

• Increased cliff jointing

Constructive waves are most likely to produce which depositional outcome?

• Narrow, steep beaches

• Offshore sediment loss

• Wide, gently sloping beaches

• Increased cliff instability

Which process most directly explains why shingle beaches are steeper than sandy beaches?

• Greater abrasion

• Lower porosity

• Increased permeability

• Stronger backwash

Longshore drift occurs because:

• Backwash always exceeds swash

• Waves approach the coast at an angle

• Sediment moves offshore during storms

• Tides redistribute sediment daily

Which factor would most likely interrupt longshore drift, leading to deposition?

• Increased fetch

• Headland shelter

• Stronger destructive waves

• Cliff undercutting

A spit is most likely to form when:

• Wave refraction focuses energy

• Sediment supply exceeds removal

• Cliff erosion dominates

• Backwash is dominant

Why do spits often develop a recurved end?

• Differential erosion of sediment sizes

• Seasonal or secondary wind direction changes

• Increased tidal range

• Offshore sediment sinks

Which process explains why sediment is deposited in a bay rather than on a headland?

• Abrasion

• Hydraulic action

• Wave divergence

• Increased fetch

A bar is most likely to form when:

• A spit extends fully across a bay

• Cliff retreat accelerates

• Tidal currents increase

• Sediment supply declines

What depositional landform results in a lagoon?

• Tombolo formation

• Barrier beach formation

• Stack collapse

• Headland erosion