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5.5 - Coral reefs

Question 1 of 230 correct · 0 wrong

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✅Evaluate

Recall the key points about threats and how humans can help.

✅EvaluateQuestion 2 of 23

Complete the sentences using the correct terms.

0 / 3 marks
✅Evaluate

Match the terms (1–8) to the definitions (A–H). Terms: 1. Coral polyp 2. Calcium carbonate 3. Lagoon 4. Fringing reef 5. Barrier reef 6. Atoll 7. Bleaching 8. Turbidity Definitions: A. Ring‑shaped reef around a central pool B. Cloudiness of water due to particles C. Hard mineral (CaCO₃) that forms coral skeletons D. Reef close to shore E. Shallow sea between reef and land F. Reef offshore with a wide lagoon G. Coral loses colour due to stress H. Tiny animal that builds the reef.

✅Evaluate

Use Google Earth (web) and identify reef patterns.

✅Evaluate

Describe two key features of Belize’s reef system.

✅EvaluateQuestion 6 of 23

Which substance makes up most of a coral reef’s hard skeleton?

0 / 1 marks
✅EvaluateQuestion 7 of 23

Which set of conditions is MOST suitable for reef‑building coral?

0 / 1 marks
✅EvaluateQuestion 8 of 23

After heavy rain, a river mouth becomes brown and cloudy near the coast. Which reef problem is MOST likely to increase?

0 / 1 marks
✅Evaluate

State TWO differences between a fringing reef and a barrier reef.

✅EvaluateQuestion 10 of 23

A coastal village wants the BEST natural protection from large Atlantic waves. Which offshore feature would MOST reduce wave energy before waves reach the shore?

0 / 1 marks
✅Evaluate

Explain TWO ways that muddy runoff from cleared hillsides can reduce coral reef health in the bay.

✅EvaluateQuestion 12 of 23

Coral reefs are formed mainly by the activity of…

0 / 1 marks
✅EvaluateQuestion 13 of 23

The hard material that forms most coral reef structures is…

0 / 1 marks
✅EvaluateQuestion 14 of 23

Coral polyps usually need water that is…

0 / 1 marks
✅EvaluateQuestion 15 of 23

A fringing reef is best described as a reef that…

0 / 1 marks
✅EvaluateQuestion 16 of 23

A barrier reef is different from a fringing reef because a barrier reef…

0 / 1 marks
✅EvaluateQuestion 17 of 23

An atoll is a…

0 / 1 marks
✅EvaluateQuestion 18 of 23

‘Well-aerated’ seawater means the water has…

0 / 1 marks
✅EvaluateQuestion 19 of 23

A major reason coral reefs rarely develop close to large muddy river mouths is that…

0 / 1 marks
✅EvaluateQuestion 20 of 23

Which Caribbean location is best known for having part of the Mesoamerican Barrier Reef system?

0 / 1 marks
✅EvaluateQuestion 21 of 23

A reef is described as ‘fringing’ when it is…

0 / 1 marks
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Farmers clear forest on a steep hillside near the coast in Jamaica. After heavy rain, more soil is washed into the sea. How could this affect nearby coral reefs?

✅EvaluateQuestion 23 of 23

After several weeks of unusually high sea temperatures, divers in Tobago report widespread coral bleaching. The BEST explanation is that…

0 / 1 marks
✅Evaluate

Recall the key points about threats and how humans can help.

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