Starter quiz
- Waves approach the coast at an angle because of ______
- the sun
- the direction of prevailing wind ✓
- the gravitational pull of the moon
-
- Longshore drift is...
- sediment carried or transported by waves along the coastline ✓
- the process of Earth’s surface, e.g. rock or soil, being worn away
- when sand, mud and rocks are dropped by the water carrying them
-
- The backwash carries sediment back down the slope of the beach because of...
- 'gravity' ✓
- Order the stages of longshore drift.
- 1⇔Waves approach the coast at an angle because of the direction of prevailing wind
- 2⇔The swash will carry the sediment towards the beach at an angle.
- 3⇔The backwash carries sediment back down the beach because of gravity.
- 4⇔The process repeats itself along the coast in a zigzag movement.
- When water loses its energy, any sediment it is carrying is...
- eroded
- transported
- deposited ✓
-
- Which three of these coastal features was created by the process of deposition?
- stack
- spit ✓
- arch
- tomblo ✓
- bar ✓
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Exit quiz
- A ______ is when there is too much water in a waterway, such as a river, and it overflows onto land that is normally dry.
- 'flood' ✓
- The UK coastline is...
- static.
- always the same.
- always changing. ✓
-
- Why are the cliffs at Happisburgh easy to erode?
- They are made of sands, silts and clay. ✓
- They are made of stone and clay.
- They are six to ten metres tall.
-
- ______ engineering solutions are usually designed to act as a barrier between the sea and the land.
- 'hard' ✓
- A ______ fence-like framework built at a right angle to the shore. They help hold sand on the beach, instead of drifting away.
- groyne is ✓
- sea wall is
- gabions are
-
- Which of these are soft engineering coastal defence strategies?
- sea wall
- beach nourishment ✓
- beach reprofiling ✓
- rip rap
-
Worksheet
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Lesson Details
Key learning points
- Some people living on the coast are at risk of losing their homes because of coastal erosion.
- Coastlines can be protected via hard or soft engineering techniques including sea walls, groynes and beach nourishment.
- There are many points of view to consider when deciding whether installing coastal defences is cost-effective.
Common misconception
An idea that protecting the land is always the right decision.
Sometimes protecting one stretch of coastline can have negative consequences for the coastline nearby. It may become sediment starved or impacted by higher energy waves.
Keywords
Static - Something that is static does not move or change
Flood - A flood is when there is too much water in a waterway, such as a river, and it overflows onto land that is normally dry
Energy - Energy is the power used to make things work, for example to provide heat or light or to operate machinery
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