Year 9 oceans knowledge check

Which of the following is not a zone found in the ocean

• Sunlight

• Twilight

• Midnight

• Daylight

What is being defined below:

Ocean Conveyor Belt

a constantly moving system of ocean circulation driven by temperature and salinity (amount of salt in the water)

a

• Global atmospheric circulation

• Oceanic movement

• The ocean cycle

• The ocean conveyor belt

Which is the shallowest ocean zone?

• neritic zone

• inter-tidal zone

• twilight zone

• midnight zone

The movement of water around the ocean is driven by two things. The temperature and the _________________ of the water.

In the ocean conveyor belt ____________ blows warm surface water from the equator towards the poles.

In the ocean conveyor, belt deep ocean currents move __________, saltier water from the poles to the equator.

Which temperatures are ideal for coral reefs?

• 23-29 degrees centigrade

• 20-23 degrees centigrade

• Over 29 degrees centigrade

How much global marine life is found in coral reefs

• 25%

• 40%

• 50%

• 35%

Which of the following are reasons why oceans are important?

• They are a carbon sink

• They provide income for nearly 350 million people

• They provide the main source of protein for 1 billion people on our planet.

• They absorb oxygen, balancing our climate.

What is the name of the ecosystem we have studied that is found in the intertidal zone in tropical coastal countries? ____________________ ___________________.