Coasts (Mid Unit Assessment

Backwash > Swash =

• Constructive Waves

• Wave Energy

• Destructive waves

• Wave Crest

Swash > Backwash =

• Wave Energy

• Destructive Waves

• Wave Trough

• Constructive Waves

Erosion is ...?

• The building up of rock

• The wearing down of rock, 'in place'

• The movement of rock from one place to another

• Where the wind blows sand away

What is meant by Hydraulic Action

• Where soluble minerals are dissolve

• How stones become smaller and more rounded

• Where pebbles bounce along the bottom of the sea

• Power of the waves to break up rock

What is meant by 'Attrition'?

• Where rock is smoothed and made smaller

• Where soluble minerals are dissolved

• Where soluble material is carried along in the current

• Where rocks are turned end over end by sea currents

Identify the landform

• Tombolo

• Cave

• Stack

• Wave-cut notch

Identify the landform?

• Spit

• Bay

• Headland

• Sand Dunes

Identify the FIRST Statement in the sequence below ...

• The backwalls of the caves are broken through by the waves to reveal and arch

• Caves are formed by hydraulic action on either side of the headland

• The power of the sea continually erodes the headland until the arch collapses

• Wave refraction cause currents to 'bend' and attack the sides of the headland

Pick the THIRD Statement in the sequence ...

• Alternate layers of hard and soft rock characterise a coastline

• Prominent cliffs sticking out to sea are called headlands

• By differential erosion, the soft rock erodes faster than the hard rock

• 'Halfmoon'shapes carved into the soft rock of the coastline are called bays

Identify the missing word. 'The waves, opening up a wave-cut notch are .......................................................... the cliffs above.'

• Engineering

• Undercutting

• Eroding

• Challenging