Ocean Floor Features

What does the ocean floor look like?

• It has fewer mountains than land.

• It has higher mountains and deeper valleys than land.

• It is completely flat.

• It is made of sand only.

How do scientists gather information about the ocean floor?

• By using robots only?

• By sending people directly to the ocean floor?

• By using sound waves and other indirect methods.

• By using only cameras.

What happens at divergent plates boundaries?

• Plates move towards each other?

• Plates move away from each other, creating a ridge?

• Plates stay still.

• Plates dissapear.

What is the Mariana Trench?

• The highest point in the ocean.

• A deep trench formed where an oceanic plate moves under a continental plate.

• A type of underwater volcano.

• A shallow part of the ocean.

How do volcanoes form at subduction zones?

• From ice melting.

• From the ocean floor being flat.

• From water evaporating

• From magma rising up to the surface after a plate is pushed downward.

What is a seamount?

• An underwater mountain formed from magma rising.

• A flat area of the ocean floor.

• A type of marine animal.

• A type of ocean wave.

What are guoes?

• Underwater volcanoes with sharp tops.

• Large fish found in the ocean.

• Underwater mountains with flattened tops.

• Deep vallyes in the ocean.

What is the continental shelf?

• A part of the ocean that is always dry.

• The part of the continent that is underwater.

• The deepest part of the ocean.

• A type of ocean wave.

What is the abyssal plain?

• A large flat area of sediment buildup at the bottom of the ocean.

• The highest point in the ocean.

• A place where fish gather.

• A flat region where the ocean become shallow.

What do scientists learn about the ocean floor?

• It has no mysteries left to discover.

• It is only made up of sand.

• It has no mountains or valleys.

• It is a fascinating place with many mysteries still awaiting discovery.