Oceanography Quiz

What percentage of Earth's water is held by the ocean?

• 50%

• 70%

• 97%

• 100%

Which type of oceanography focuses on the movement of water?

• Physical oceanography

• Geological oceanography

• Chemical oceanography

• Biological oceanography

Approximately what percentage of the world's oceans have been explored?

• 75%

• 50%

• 25%

• 5%

What do phytoplankton in the ocean produce during photosynthesis?

• Carbon dioxide

• Oxygen

• Hydrogen

• Nitrogen

How do oceans influence the planet's climate?

• By reflecting moonlight

• By absorbing sunlight

• By producing carbon dioxide

• By causing changes in weather