Rocky and Sandy Coasts

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What is a tombolo?

Back

A tombolo is a sand formation that connects an island to the mainland or another island, formed by the accumulation of sand due to wave action.

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What is a headland?

Back

A headland is a coastal landform that juts out into the sea, often characterized by steep cliffs and resistant rock.

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What is a sand spit?

Back

A sand spit is a narrow strip of land that extends into a body of water, formed by the deposition of sand carried by currents.

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What is backwash?

Back

Backwash is the water that flows back down the beach after a wave has broken, moving away from the shore.

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What is swash?

Back

Swash is the movement of water up the beach after a wave breaks, carrying sand and other materials with it.

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What are sea stacks?

Back

Sea stacks are vertical columns of rock that have been eroded from a headland, often isolated from the mainland.

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What is salinity?

Back

Salinity is the measure of the concentration of salts in water, typically expressed in parts per thousand (ppt).

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What factors can affect salinity in coastal waters?

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Factors include freshwater input from rivers, evaporation rates, and ocean currents.

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What is the role of sea stars in coastal ecosystems?

Back

Sea stars are important predators in coastal ecosystems, preying on organisms like mussels and helping to maintain ecological balance.

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What is erosion?

Back

Erosion is the process by which natural forces, such as water and wind, wear away rocks and soil.