
Coasts quiz
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What forms where a river drops its sediment into the sea?
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More questions about Coasts
These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.
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What rock forms the White Cliffs of Dover?
Answer: Chalk
Why: Chalk is built from coccoliths, the microscopic calcite plates of single-celled algae that piled up on an ancient seabed.
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Why are the waves at Portugal's Nazaré so huge?
Answer: An undersea canyon
Why: The Nazaré Canyon, Europe's largest undersea canyon, plunges to about 5,000 m and funnels Atlantic swell toward the shore.
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What were Australia's Twelve Apostles called until 1922?
Answer: Sow and Piglets
Why: Despite the name, the formation never had twelve stacks: there were only ever nine.
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Which country has the world's shortest coastline?
Answer: Monaco
Why: More than a quarter of Monaco's present territory is land reclaimed from the Mediterranean Sea.
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How many geological periods do the Jurassic Coast's rocks span?
Answer: Three
Why: Its cliffs record a Triassic desert, a Jurassic tropical sea and Cretaceous swamps, about 185 million years in all.
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What is a sandbar joining an island to the mainland called?
Answer: Tombolo
Why: Borrowed from Italian, tombolo means a sand dune, and it goes back to the Latin tumulus, a mound.