TED-Ed: How big is the ocean? - Scott Gass

The video explores the vastness and unity of the ocean, emphasizing its role as a single massive body of water covering 71% of Earth's surface. It holds 97% of Earth's water and 99% of the biosphere, making it crucial for life. The ocean's geological features include the mid-ocean ridge, the largest mountain range, and the Challenger Deep, the deepest canyon. Despite its enormity, human activities impact the ocean, with half the world's population living near coastlines. The video highlights the ocean's significance and the human responsibility to protect it.

What percentage of Earth's surface is covered by the ocean?

• 71%

• 97%

• 50%

• 85%

How much of Earth's total water content is held by the ocean?

• 97%

• 50%

• 71%

• 85%

What percentage of the world's biosphere is contained within the ocean?

• 99%

• 50%

• 71%

• 85%

Which underwater feature is the world's largest mountain range?

• The Andes

• The Himalayas

• The mid-ocean ridge

• The Rocky Mountains

Where is the world's tallest mountain located?

• In the ocean

• In the sky

• On the moon

• On land

What is the depth of the Challenger Deep compared to Mount Everest?

• Same depth

• Deeper

• Equal height

• Shallower

What percentage of the world's population lives within 100 kilometers of the coastline?

• 75%

• 50%

• 25%

• 90%