Oceans

What is an ocean?

• A large lake of freshwater

• A large body of salt water surrounding land

• A small pond surrounded by trees

• A large area of dry land

How much of Earth's surface is covered by oceans?

• 50%

• 97%

• 71%

• 25%

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

• 25%

• 50%

• 71%

• 97%

Which of the following is NOT one of Earth's five oceans?

• Arctic Ocean

• Atlantic Ocean

• Indian Ocean

• Mediterranean Ocean

Which of the following are one of Earth's five oceans?

• Arctic Ocean

• Atlantic Ocean

• Indian Ocean

• Mediterranean Ocean

• Pacific Ocean

What does the word "marine" mean?

• Anything found in, or made by, the sea

• Plants that grow on land

• Animals that live in rivers

• A type of ship used for fishing

What kind of ecosystem is an ocean?

• Desert

• Forest

• Marine

• River

What is the bottom of the ocean called?

• Abyssal plain

• Ocean trench

• Continental shelf

• Ocean floor

Which of the following is a feature of the ocean floor that is shallow?

• Ocean trench

• Abyssal plain

• Continental shelf

• Continental rise

What happens to the temperature of ocean water as the depth increases?

• It gets warmer

• It stays the same

• It gets colder

• It changes randomly