An Overview of the Oceans

This is a type of technology that uses sound waves to project at an object and then calculates how long it takes for the wave to bounce back in to a distance.

• Radar

• Satellites

• Sonar

• Computers

These vessels can be operated remotely, or can carry scientists to the deepest parts of the ocean.

• Submersibles

• Ships

• Boats

• Sonar

What two things may not have been discovered without the use of submersibles?

• Deep sea creatures

• Mid-ocean ridge

• Hydrothermal vents

• Whales

True or False: The salinity of the oceans in the past was much higher than it is today.

• True

• False

Where did the water in the oceans come from?

• Comets

• Meteorites

• Volcanoes

• All of the options are possible sources of ocean water

How much of the Earth's water is in the oceans?

• 10%

• 70%

• 35%

• 97%

Approximately how much of the Earth's surface is covered in water?

• 97%

• 71%

• 13%

• 56%

This is the largest ocean and contains roughly half of the World's sea water.

• Pacific

• Atlantic

• Indian

• Arctic

This ocean is the second largest and flows between the Americas and Africa

• Pacific

• Atlantic

• Indian

• Arctic

What is one component of the ocean which allows it to absorb large amounts of CO₂ from the atmosphere?

• Hydrothermal vents

• Photosynthetic algae

• Seaweed

• Currents