Coral - Geography CIE IGCSE

Where is coral generally found?

• between 30°N and 30°S

• between 50°N and 20°S

• between 59°N and 10°S

• between 10°N and 89°S

What sea temperatures does coral require?

• between 18 and 25°C

• between 40 and 50°C

• between 10 and 20°C

• between 28 and 30°C

What is the ideal sea temperature for coral?

• 22-25°C

• 23-28°C

• 18-20°C

• 30-33°C

What happens if the sea temperatures are too cold?

• The coral grows very slowly/stops growing

• The coral dies (coral bleaching)

• The coral disappears

• The coral increases photosynthesis

What happens if the sea temperatures are too hot?

• The coral grows very slowly/stops growing

• The coral dies (coral bleaching)

• The coral disappears

• The coral photosynthesises more

Give ideal conditions for coral

• Clean water

• clear water

• deep water

• murky water

• shallow water

Why should water be clear, clean and shallow?

• To allow for photosynthesis

• To allow for respiration

• It shouldn't

• Because it releases a special chemical in the coral that helps them grow super fast.

How deep does the coral like the water to be?

• less than 200 m

• over 1000 m

• 1 kilometer

• 40 metres

What is the zone that is less than 200 m deep that the coral grows in called?

• euphotic zone

• intertidal zone

• neritic zone

• twilight zone

What salinity does coral like?

• 35 ppt

• 46 ppt

• 57ppt

• 12 ppt