Oceans Quizizz [Study Guide Quiz]

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

• 50%

• 60%

• 70%

• 80%

Why do most ocean life forms like to live on the continental shelf?

• Because of the deep valleys

• Because of the flat bottom

• Because of all the light

• Because of the steep drop

What is the abyssal plain?

• The steep drop from the edge of the shelf to the ocean floor

• The flat bottom of the ocean

• Deep valleys on the ocean floor

• The area of shallow water that surrounds land

Which ocean floor feature is located at the bottom of the continental slope?

• Continental Shelf

• Ocean Trench

• Continental Rise

• Abyssal Plain

Which feature is the area of shallow water that surrounds land?

• Continental Rise

• Continental Shelf

• Abyssal Plain

• Ocean Trench

Which feature is located at the bottom of the ocean?

• Continental Shelf

• Abyssal Plain

• Continental Rise

• Ocean Trench

What is ocean water a mixture of?

• Water, dissolved solids, and dissolved gases

• Water, sand, and dissolved gases

• Water, rocks, and dissolved solids

• Water, salt, and sand

Where does most of the ocean's salt come from?

• The ocean floor

• Rocks on land

• Marine animals

• Seaweed

What is the Gulf Stream?

• A river in Europe

• A large ocean current

• A type of fish

• A mountain range

What percentage of the Earth's oxygen is produced by phytoplankton?

• 10%

• 25%

• Over 50%

• 75%