Coastal Environments

Which of the following descriptions correctly describe low energy waves?

• High wave height and frequency

• Generated far offshore by prevailing winds

• Powerful swash helps to build beaches

• Spilling breakers due to gently shelving sea floor

Which process involves wave fronts bending around and focusing wave energy on headlands, whilst dissipating it in bays?

• Wave backwash

• Wave translation

• Wave refraction

• Wave breaking

Which type of coastal erosion involves pebbles and shingle being thrown against a cliff?

• Hydraulic Action

• Abrasion

• Attrition

• Solution

Which of the following processes are sub-aerial?

• Mass movement

• Cavitation

• Chemical weathering

• Biological weathering

Which of the following factors result in increased erosion of the coast?

• Steep destructive waves breaking at the cliff face

• Strong tides and longshore drift that moves material quickly

• Well jointed and faulted rocks dipping towards the shore

• Offshore bars causing waves to break before reaching the shore

If the cliffs in this coastal zone were protected with a seawall, how would it affect the sediment cell?

• The offshore bars and banks would increase in size

• Inputs of material would decrease overall, causing erosion

• Longshore drift would transport more material across the estuary, creating a bar

• The sand dunes would decrease in size

Draw the process of longshore drift, including the swash (S), backwash (B), prevailing wind (PW) and overall direction of longshore drift (LD).

Which of the following terms correctly describes the coastline in this photograph?

• Rocky and high energy

• Headland made from well jointed sedimentary rock

• Depositional features

• Advancing coastline

Which are the correct names of the features shown?

• A-Wavecut notch B-Stack

  C-Stump

  D- Wavecut platform

• A-Cave

  B-Stack

  C-Stump

  D- Wavecut platform

• A-Cave

  B-Arch

  C-Stack

  D- Wavecut platform

• A-Cave

  B-Arch

  C-Stack

  D- Stump

Which of these descriptions correctly describes feature A in this photograph?

• A wave-cut platform created by the retreat of a headland

• Found in the inter-tidal zone

• Will rise over time due to deposition

• Found on low energy coastlines