Starter quiz
- Beaches are made from ...
- only sand.
- sand, shingle, pebbles, mud. ✓
- sand and pebbles.
-
- Match the term with its description.
- constructive waves⇔low waves, that deposit sediment onto beaches ✓
- destructive waves⇔high waves, that erode the coastline ✓
- longshore drift⇔zigzag movement of sediment along the coast by wave action ✓
- ______ is the process when material is laid down or added to a landform.
- 'Deposition' ✓
- Which of the following are landforms created by coastal erosion?
- bay ✓
- hydraulic action
- abrasion
- arch ✓
-
- Constructive waves have ...
- a strong swash and weak backwash.
- a weak backwash and a strong swash. ✓
- a strong swash and strong backwash.
- a weak backwash and a weak swash.
-
- The movement of sediment along the coast by wave action in a zigzag pattern is known as ...
- longshore drift. ✓
- constructive drift.
- destructive drift.
- shortshore drift.
-
Exit quiz
- Which coastal landforms are created by deposition?
- beaches ✓
- spits ✓
- bars ✓
- sand dunes ✓
- headlands
-
- Beach profiles are steeper and beaches are narrower in the winter due to more __________ waves.
- destructive ✓
- constructive
- longshore
-
- Spits are created by longshore drift. Put these statements, describing the process, in the correct order.
- 1⇔Waves approach the coast at an angle due to the prevailing wind direction.
- 2⇔The waves carry sediment along the shoreline.
- 3⇔The coastline changes direction or a river mouth is reached.
- 4⇔Longshore drift then deposits material from the beach into the sea.
- 5⇔Over time, sediment builds up along from where the coast changes direction.
- 6⇔The sand will build up until it is above sea level.
- 7⇔Forming a narrow stretch of sand or shingle known as a spit.
- Bars form when longshore drift moves sediment across a ...
- bay. ✓
- tombolo.
- spit.
-
- Sand ______ need a flat beach, plenty of sand, a wide tidal range, onshore winds and obstacles to form.
- 'dunes' ✓
- Sand dunes form when wind blows sand onto the land, and plants like marram ______ stabilise the sand, trapping more sediment and allowing the dune to grow over time.
- 'grass' ✓
Worksheet
Loading worksheet ...
Presentation
Loading presentation ...
Video
Lesson Details
Key learning points
- Beaches have distinctive characteristics and formation.
- Spits and bars have distinctive characteristics and formation.
- Sand dunes have distinctive characteristics and formation.
Common misconception
Coastal deposition happens with strong powerful waves.
Deposition happens in areas with low-energy waves, such as bays or sheltered areas, where waves lose energy and can no longer carry their load of sediment.
Keywords
Deposition - material, such as sand and pebbles, is dropped by waves, wind, or water when they lose energy
Longshore drift - movement of sediment along the coast by wave action in a zigzag pattern
Constructive waves - low waves, typically formed by distant storms, that deposit sediment onto beaches
+