Morris Oceans 4.7

The ocean is a dynamic system that covers most of Earth's ________.

Which area of the ocean floor is the part of a continent that is underwater?

• ocean trench

• continental shelf

• abyssal plain

• ocean current

This is the steep slope to the ocean floor. It's decline is much steeper than the continental shelf.

• trench

• continental shelf

• abyssal plain

• continental slope

This is a smooth flat surface of the ocean floor. This area is located between 10,000-20,000 feet below the water's surface.

• ocean trench

• abyssal plain

• tide

• current

What area is a deep cut in the ocean floor? This area is formed by moving plates that are a part of the Earth's crust.

• ocean trench

• abyssal plain

• continental shelf

• continental slope

What are ocean currents?

• movement of ocean water from one area to another

• the gravitational pull on the water by the moon

• the daily newspaper of a coastal town

Tags

NGSS.MS-ESS2-6

NGSS.MS-ESS2-4

What causes ocean currents?

• It's all the moon's fault.

• Wind patterns and differences in water temperature

• Plants

• The movement of ships on the ocean

Tags

NGSS.MS-ESS2-6

The tides are

• how easily things float in the ocean water.

• the amount of runoff from the land.

• the daily rise and fall of the Earth's water on the coastline.

• caused only by hurricanes.

Organisms in the ocean are categorized by

• what they eat.

• their colors.

• how they move.

• who eats them.

What is the name for the group of organisms who float, or drift, in the water and must have the sun to produce energy through photosynthesis? These organisms are the start of the food chain.

• plankton

• benthos

• nekton

• seaweed

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3