Starter quiz
- __________ is the process where rocks are worn away.
- Deposition
- Erosion ✓
- Construction
- Division
-
- Match the key word and its definition.
- erosion⇔the wearing away of rock ✓
- transportation⇔when water moves sand, mud and rocks from one place to another ✓
- deposition⇔when sand, mud or rocks are dropped by the water that was carrying it ✓
- Deposition happens at the coast when a wave ______ energy and can no longer carry its load.
- 'loses' ✓
- What do you think longshore drift could mean?
- the lateral movement of sediment across a beach ✓
- how far a wave travels
- the direction of the prevailing wind
- the process of wearing away of rocks
-
- The __________ is wind from a particular direction most frequently experienced in a location.
- prevailing wind ✓
- strongest wind
- storm wind
-
- Which of the following are true?
- deposition only happens in bays
- waves can deposit sediment and other debris at the coast ✓
- deposition happens when waves have lots of energy
- deposition happens when waves lose energy ✓
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Exit quiz
- Match the key words with their definition.
- deposition⇔when material such as sand, mud or rocks is dropped by water ✓
- transportation⇔when water moves sand, mud and rocks from one place to another ✓
- swash⇔when a wave rushes up the beach ✓
- backwash⇔when the water from a wave retreats back into the sea ✓
- sediment⇔material that is moved by water or air and settles in another place ✓
- Longshore drift occurs when ...
- 1⇔waves approach the coast at an angle because of the prevailing wind. Sediment is
- 2⇔transported along the coast by the waves.
- 3⇔The swash moves the sediment up the beach at an angle due to
- 4⇔the prevailing wind. Backwash
- 5⇔carries sediment back towards the sea because of gravity.
- 6⇔The process repeats itself along the coast, in a zigzag pattern.
- Which of these are landforms created by the transportation and deposition of sediment?
- spits ✓
- bars ✓
- stacks
- headlands
-
- A ______ forms when longshore drift is interrupted because of a change of direction at the coastline.
- 'spit' ✓
Worksheet
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Lesson Details
Key learning points
- Longshore drift is the lateral movement of sediment across the beach through swash and backwash.
- Longshore drift creates depositional landforms such as spits, bars and tombolos.
- Spits are long narrow ridges of sand or shingle which project from a coastline into the sea.
- Salt marshes may form behind spits, as these are low energy zones.
- Spits can change direction due to the prevailing wind, which makes them curve into a hook.
Common misconception
That the direction of the prevailing wind is the direction that the wind is blowing in at any particular time.
The prevailing wind is wind from a particular direction that is most frequently experienced in a location. Winds can come from other directions, especially in stormy conditions, but they are not the same as the prevailing wind.
Keywords
Deposition - when material such as sand, mud or rocks is dropped by the water that was carrying it
Transportation - transportation is when water moves sand, mud and rocks
Swash - when a wave rushes up the beach
Backwash - when the water from a wave retreats back into the sea
Sediment - material that is moved by water or air and settles in another place
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