Intro to the Oceans

The bottom of the ocean is completely flat.

• true

• false

What are the huge, flat areas of the ocean floor called?

• seamounts

• trenches

• abyssal plain

• continental shelf

The gradually sloping area at the edge of the ocean is called:

• abyssal plain

• continental slope

• continental shelf

• Galapagos Rift

The geographic name for the steep change just beyond continental shelf.

• continental slope

• continental rise

• abyssal plain

• oceanic trench

What does salinity measure?

• ocean temperature

• amount of salt in water

• ratio of mass to volume

How much of the world is covered by ocean?

• about 50%

• More than 70%
  

• about 90%
  

Name the ocean labeled 4?

• Indian Ocean

• Southern Ocean

• Pacific Ocean

• Atlantic Ocean

What do you call an underwater mountain?

• trench
• abyssal plain
• seamount
• volcanic island

What is a deep, underwater valley or canyon on the ocean floor?

• seamount
• trench
• continental rise
• continental slope

The deepest parts of the ocean

• trenches

• abyssal plain

• ocean basin

• rift

Tags

NGSS.MS-ESS2-3