Coasts
Grade 7: erosion and deposition, cliffs, caves, arches and stacks, beaches and spits, protecting coasts.
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Questions
What is it called when waves wear away and remove rock from the coast?
- Condensation
- Deposition
- Erosion
- Evaporation
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ErosionWhat is deposition at the coast?
- Cliffs being worn away by waves
- Rock being broken by frost on land
- Sand or stones being dropped by the sea
- Waves carrying material out to sea
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Sand or stones being dropped by the seaWaves usually deposit material when they gain more energy. (True or false?)
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FalseWhich process happens when waves throw pebbles against a cliff and wear it away?
- Abrasion
- Deposition
- Longshore drift
- Weathering by wind
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AbrasionWhich of these forms first when waves attack a crack in a headland?
- A beach
- A cave
- A spit
- A stack
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A caveWhat is a tall column of rock left standing in the sea after an arch collapses?
- A bay
- A cave
- A spit
- A stack
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A stackWhat is the correct order of these landforms as a headland erodes?
- Arch, cave, stack
- Cave, arch, stack
- Cave, stack, arch
- Stack, arch, cave
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Cave, arch, stackA wave-cut platform is left behind as a cliff retreats. (True or false?)
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TrueWhat is a beach?
- A hole in a cliff
- A strip of sand or pebbles beside the sea
- A tall rock standing in the sea
- A wall built to stop waves
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A strip of sand or pebbles beside the seaWhat name is given to the zigzag movement of sand and pebbles along a beach? (Answer out loud)
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Longshore driftA spit is a long, narrow ridge of sand that is made by which process?
- Abrasion
- Deposition
- Erosion
- Melting
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DepositionWhat do we call a strong wall built along a coast to stop waves hitting the land? (Answer out loud)
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A sea wallWhat are groynes, built out from a beach into the sea, designed to do?
- Carry boats to the shore
- Dig out the beach
- Make waves bigger
- Trap sand and slow longshore drift
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Trap sand and slow longshore driftBeach nourishment protects a coast by removing sand from the beach. (True or false?)
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FalseWhat are large boulders piled at the foot of a cliff to absorb wave energy called? (Answer out loud)
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Rock armourWhy might a council choose not to protect a quiet stretch of coast?
- Beaches only form behind walls
- It costs a lot and few buildings are at risk
- Sea walls make waves disappear
- Waves never erode that kind of coast
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It costs a lot and few buildings are at risk
Play it as a game
Hoop ShotAnswer right to shoot: close for 2, middle for 3, far for 5. The further, the harder.
Penalty KickAnswer right to take a penalty: left or right for 2, the top corner for 3. Will the keeper save it?
Fishing PondAnswer right to cast at a buoy: fish worth 1 to 3, the golden fish for 5, or a silly old boot!
Claw MachineAnswer right to work the claw: grab a plush prize, but the big ones slip more often!