🌿 Science & Nature Trivia
Quiz Set 11 — Oceanography
Answer all 10 questions. Click an option to see if you got it right!
Question 1 of 10
What is the average depth of the ocean?
The average depth of the ocean is approximately 3,688 meters (12,100 feet).
Question 2 of 10
What is the deepest point in the ocean?
The Challenger Deep in the Mariana Trench reaches about 10,994 meters (36,070 feet).
Question 3 of 10
What causes ocean currents?
Ocean currents are driven by wind, differences in water temperature and salinity, and the Coriolis effect.
Question 4 of 10
What is the Great Barrier Reef made of?
The Great Barrier Reef is built by billions of tiny coral polyps over thousands of years.
Question 5 of 10
What is bioluminescence?
Bioluminescence is the production of light by living organisms through chemical reactions.
Question 6 of 10
What is the saltiest body of water on Earth?
Don Juan Pond in Antarctica has a salinity of over 40%, making it the saltiest body of water.
Question 7 of 10
How much of the ocean floor has been mapped in detail?
As of recent estimates, only about 5-10% of the ocean floor has been mapped in high resolution.
Question 8 of 10
What is a tsunami?
Tsunamis are large ocean waves triggered by underwater earthquakes, volcanic eruptions, or landslides.
Question 9 of 10
What zone of the ocean receives no sunlight?
The aphotic (midnight) zone below about 1,000 meters receives no sunlight at all.
Question 10 of 10
What is the largest ocean on Earth?
The Pacific Ocean covers about 165.25 million square km, larger than all land on Earth combined.