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5.8 - Coral Reefs and Beach Erosion

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✅EvaluateQuestion 1 of 21

How can a healthy coral reef help to reduce beach erosion on a Caribbean coast?

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✅EvaluateQuestion 2 of 21

Which threat is MOST directly linked to coral bleaching in the Caribbean?

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✅EvaluateQuestion 3 of 21

A reef has been badly damaged by repeated storms. During the next hurricane season, what is MOST likely to happen at the beach behind the reef?

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✅EvaluateQuestion 4 of 21

Which is an example of a LAND-BASED activity that can damage coral reefs?

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✅EvaluateQuestion 5 of 21

What is meant by beach erosion?

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✅EvaluateQuestion 6 of 21

Reef-building corals are living animals that form reefs mainly by producing

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✅EvaluateQuestion 7 of 21

Which statement BEST describes why coral reefs are important to many Caribbean beaches?

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✅EvaluateQuestion 8 of 21

After intense rainfall in Dominica, rivers carry muddy water into a bay with a fringing reef. What is the MOST likely immediate effect on the reef?

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✅EvaluateQuestion 9 of 21

A new marina in Antigua allows boats to drop anchors on the reef flat. What is the MOST direct type of damage caused?

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✅EvaluateQuestion 10 of 21

In Barbados, parrotfish are heavily overfished near a reef. How can this increase the risk of beach erosion?

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✅EvaluateQuestion 11 of 21

A tourist beach in Jamaica starts to narrow after a reef die-off. Which statement BEST explains the link?

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✅EvaluateQuestion 12 of 21

Which action would MOST help protect coral reefs AND reduce beach erosion in the long term?

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✅EvaluateQuestion 13 of 21

Two coasts are compared: a high-energy windward coast and a sheltered leeward coast. If reefs are damaged in BOTH places, where is beach erosion likely to be WORSE?

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✅EvaluateQuestion 14 of 21

Beach X lies behind an intact reef. Beach Y lies behind a reef with large gaps. During a similar storm, what is the MOST likely outcome?

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✅EvaluateQuestion 15 of 21

A hillside in St Lucia is cleared for housing. In later rainy seasons, more sediment reaches a nearby lagoon, coral cover declines, and the beach becomes narrower. Which sequence BEST explains this chain of events?

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✅EvaluateQuestion 16 of 21

Why can sea-level rise increase beach erosion if a coral reef cannot grow upward fast enough?

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✅EvaluateQuestion 17 of 21

Which set of conditions is MOST likely to increase both coral reef stress AND the risk of beach erosion?

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✅EvaluateQuestion 18 of 21

A coastal engineer suggests replacing a damaged reef’s protection with a seawall. Which statement is MOST accurate?

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✅EvaluateQuestion 19 of 21

A beach gets much of its sand from organisms on the nearby reef (carbonate sand). If coral and calcareous algae decline sharply, what long-term change is MOST likely in the beach’s sediment budget?

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✅EvaluateQuestion 20 of 21

Beach A becomes narrower after storms but recovers in calm months. Beach B narrows a little each year with no recovery. The reef offshore of Beach B is severely damaged. What is the BEST interpretation?

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✅EvaluateQuestion 21 of 21

A coastal community in the Grenadines wants to reduce reef damage and slow beach erosion. Which plan is MOST effective and sustainable?

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✅EvaluateQuestion 1 of 21

How can a healthy coral reef help to reduce beach erosion on a Caribbean coast?

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