The ocean floor -

• Is always a flat bed of sand

• Has mountains, plains, and ridges like land surfaces

• Is covered by the same amount of water everywhere

• Covers less area than the land

The main difference between ocean water and lake water is that ocean water contains

• Oxygen

• Salt

• Algae

• Plants

What are ocean trenches?

• The deepest parts of the ocean

• The shallowest parts of the ocean

• Where marine life resides

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS3-1

Algae in the ocean provides much of the Earth's

• Oxygen

• Hydrogen

• Nitrogen

• Carbon Dioxide

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

True or False: Plankton are tiny organisms that live in water. Plankton may be plant-like or animal-like.

• True

• False

What increases as a submarine dives deeper into the ocean?

• The number of plants in the water

• The freshness of the water

• The water temperature

• The water pressure

What is a shallow area of sediment near the shore?

• The continental slope

• Abyssal plains

• The continental shelf

• Ocean trenches

Tags

NGSS.4-ESS2-2

What are animal-like plankton called?

• Zooplankton

• Phytoplankton

What are plant-like plankton called?

• Zooplankton

• Phytoplankton

True or False. The continental shelf is deep.

• True

• False