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WorksheetsCoral reefs and Mangrove swamps
Total questions: 20
Worksheet time: 11mins
To grow, coral reefs need...
Warm water between 23 to 25 degrees
Hot water between 25 to 30 degrees
Tepid water between 15 to 20 degrees
Coral has a solid...
Skeleton of calcium
Skeleton of limestone
Skeleton of gummy bears
Coral reefs are usually found...?
Along the Equator
In seas between 40 degrees north and south of the equator
In tropical and subtropical seas between 30 degrees north and south of the equator
Choose all correct answers
Coral reefs hate freshwater
Coral reefs hate silty water
Coral reefs hate water high in nutrients
Coral reefs hate mangroves
The preferred depth of water for a coral reef is
More than 70m less than 100m
more than 50m less than 70m
Less than 50m
Less than 100
Coral reefs need plenty of ____________to grow
sunlight
nutrients
algae
fishies
A fringing reef is where...
Coral grows around an island
Coral platforms grow out of the sea attached to the mainland
Coral grows away from mainland in shallow water
Mangrove swamps love
Huge temperature variations
Fresh water
choppy (rough) seas
Sheltered tropical coasts
Mangrove swamps can be found
Only along the equator
between 32 degrees north and 38 degrees south of the equator
between 40 degrees north and south of the equator
Only along the arctic and antarctic circles
Mangroves are halophytes, which mean that they...
Need to live in fresh water
Need to live in salty water
Mangroves only grow in areas where the temperature is approximately
between 5 and 10 degrees
between 10 and 15 degrees
between 15 and 20 degrees
20 degrees and above
Choose all the correct answers. A special adaptation that mangroves have to survive is...
Aerial roots to take in oxygen
Prop roots to prop up the trees
Roots that filter out the salt
Roots that absorb carbon dioxide
Choose all of the benefits that mangroves have.
They are home to a diverse number of species
Protect coastlines from erosion
Act as a defence against flooding
Filter pollutants from rivers
A benefit that Mangroves have for coral reefs are:
They trap sediment washed from the land
They provide nutrients for corals
They don't have a benefit
A benefit that Coral reefs have for mangroves is
Help with excess nutrients
Help with erosion
They don't have a benefit
An atoll is where...
Coral platforms grow out of the sea and are attached to the mainland
Coral grows in shallow water away from mainland
Coral grows around islands
A barrier reef is where...
Coral platforms grow out of the sea attached to the mainland.
Coral grows in shallow water away from mainland
Coral grows around an island
A coral reef is ...
A tidal coast with a dense vegetation able to grow in salt water
a raised area of the sea bed built from skeletons of marine animals
A coastline with a spit and rock cut platform
A tidal river with ridges of sand at its mouth
A mangrove swamp is ...
A tidal coast with a dense vegetation able to grow in salt water
a raised area of the sea bed built from the skeletons of marine animals
A coastline with a spit and rock cut platform
A tidal river with ridges of sand at its mouth
Mangrove swamps grow best where...(choose 2)
There are strong waves
There are no strong waves
There are strong tidal currents
There are no strong tidal currents
