Form 3 - Coastal Processes

Which can cause a wave to develop

• wind blowing over the surface of the sea

• underwater landslides

• underwater volcanic eruptions

• earthquakes

Which is not a process of wave erosion

• corrasion

• hydraulic action

• attrition

• traction

Which statement best describes a wave

• a stretch of open water

• a circular movement of water

• the movement of water

• the undulating motion of the sea

Which is not common to rivers and waves in the removal or transportation of materials

• traction

• suspended load

• saltation

• longshore drift

The diagram shows the formation of a bay. Which best explains its formation

(i) erosion of headland

(ii) waves eroding less resistant rocks

(iii) mountain ranges submerged at right angles to the coast

• (i) and (ii)

• (i) and (iii)

• (ii) and (iii)

• (ii) only

The action of the wave in the diagram shows

• swash and backwash meet together

• backwash is greater than swash

• swash is far greater than backwash

• no obstruction between swash and backwash

Which is not a feature formed by marine erosion

• beaches

• spits

• mudflats

• bays

Constructive waves are low powerful waves that surge up the beach, their swash is more powerful than there backwash, they form from waves created by storms far out at sea

• True

• False

Destructive waves fit the shoreline at 10 - 14 waves per minute

• True

• False

The prevailing wing is also called the most common wind

• True

• False