Starter quiz
- Which of the following best describes weathering?
- The physical movement of rock material down a slope.
- The sudden collapse of rock due to gravity.
- The breakdown or disintegration of rocks at or close to Earth's surface. ✓
- The transport of sediment along a coast.
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- Which of the following is true about constructive waves?
- They are tall and have a strong backwash.
- They have a weak swash and strong backwash.
- They have a strong swash and weak backwash. ✓
- They erode the beach more than they build it.
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- Define hydraulic action.
- The process where rocks are thrown against a cliff by waves.
- The pressure of water breaking rocks apart. ✓
- The chemical reaction of seawater with rock.
- The grinding of rocks against each other, making them smaller.
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- What causes freeze-thaw weathering?
- The chemical reaction between water and rock minerals.
- The heating and cooling of rock causing cracks.
- The movement of ice scraping against rocks.
- The expansion of water as it freezes in cracks in rocks. ✓
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- What best describes the process of slumping?
- The slow movement of soil down a slope.
- A sudden movement of rockfall.
- The movement of land down a curved surface. ✓
- The gradual scraping of rock by wind or water.
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- "High, steep waves, typically formed by local storms, that remove sediment from beaches", this statement describes ______ waves.
- 'Destructive' ✓
Exit quiz
- Which of these categories is the best fit for glacial till?
- sedimentary rock
- unconsolidated material ✓
- igneous rock
- metamorphic rock
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- The name of a coastline that has alternative layers of hard and soft rock running perpendicular to the coastline is a ______ coastline.
- 'discordant' ✓
- Coves are characteristic of which coastline type?
- discordant
- discordant and concordant
- concordant ✓
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- Match the rock type to how it is formed
- igenous rock⇔through volcanic activity ✓
- metamorphic rock⇔when existing rocks are exposed to heat and pressure ✓
- sedimentary rock⇔layers of sediment that are compressed ✓
Worksheet
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Presentation
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Video
Lesson Details
Key learning points
- Rock type (hard/soft) affects the development of coastal landforms.
- Geological structure can result in concordant and discordant coastlines.
Common misconception
Boulder clay is an example of sedimentary rock.
Boulder clay is an example of glacial till. Glacial till is an example of sedimentary deposits.
Keywords
Rock type - the physical and chemical characteristics of rocks
Geological structure - the arrangement of rock layers and rock features
Discordant coastline - where rock layers (hard and soft) run perpendicular to the coastline
Concordant coastline - where rock layers (hard and soft) run parallel to the coastline
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