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      Lesson details

      Learning outcome

      I can name and describe different types of coastal protection and discuss their effectiveness.

      Key learning points

      1. Some people living on the coast are at risk of losing their homes because of coastal erosion.
      2. Coastlines can be protected via hard or soft engineering techniques including sea walls, groynes and beach nourishment.
      3. There are many points of view to consider when deciding whether installing coastal defences is cost-effective.

      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

      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.

      Teacher tip

      Build a coastline of sand in a tray and add water. Make a ‘house’ from building blocks or modelling materials and sit it on top of the coastline. Protect your stretch of coastline by constructing ‘sea defences’ using blocks, lolly sticks, etc. Experiment with different designs and materials.

      Equipment

      Trays, sand and water. Construction materials, e.g. Lego, lolly sticks, stones, clay, plastic unit cubes, cardboard, etc.

      Licence

      This content is © Oak National Academy Limited (2026), licensed on Open Government Licence version 3.0
      except where otherwise stated. See Oak's terms & conditions
      (Collection 2).

      Lesson video

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      Prior knowledge starter quiz

      6 Questions

      Q1.
      Waves approach the coast at an angle because of

      the sun
      Correct answer: the direction of prevailing wind
      the gravitational pull of the moon

      Q2.
      Longshore drift is...

      Correct answer: 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

      Q3.
      The backwash carries sediment back down the slope of the beach because of...

      Correct Answer: gravity

      Q4.
      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.

      Q5.
      When water loses its energy, any sediment it is carrying is...

      eroded
      transported
      Correct answer: deposited

      Q6.
      Which three of these coastal features was created by the process of deposition?

      stack
      Correct answer: spit
      arch
      Correct answer: tomblo
      Correct answer: bar

      6 Questions

      Q1.
      A is when there is too much water in a waterway, such as a river, and it overflows onto land that is normally dry.

      Correct Answer: flood

      Q2.
      The UK coastline is...

      static.
      always the same.
      Correct answer: always changing.

      Q3.
      Why are the cliffs at Happisburgh easy to erode?

      Correct answer: They are made of sands, silts and clay.
      They are made of stone and clay.
      They are six to ten metres tall.

      Q4.
      engineering solutions are usually designed to act as a barrier between the sea and the land.

      Correct Answer: hard

      Q5.
      A fence-like framework built at a right angle to the shore. They help hold sand on the beach, instead of drifting away.

      Correct answer: groyne is
      sea wall is
      gabions are

      Q6.
      Which of these are soft engineering coastal defence strategies?

      sea wall
      Correct answer: beach nourishment
      Correct answer: beach reprofiling
      rip rap

      To help you plan your 6 geography lesson on: Protecting the land, download all teaching resources for free and adapt to suit your pupils' needs...