Solution 4.7

The salinity of ocean water is determined by

• the depth of the water, melting icebergs, rates of evaporation, and the amount of runoff from nearby land.

• the number of ships on the ocean, pollution, and the number of animals in the ocean.

• the phase of the moon, the amount of moisture in the air, and the amount of trash in the ocean.

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

• plankton

• benthos

• nekton

• seaweed

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

In this photo, who is the tertiary consumer?

• the seaweed

• the shark

• the fish

• the shrimp

Tags

NGSS.MS-LS2-3

Which location is likely to have the greatest water pressure, the coldest temperatures, and the smallest number of living organisms?

• 1

• 2

• 3

• 4

Algae and other producers need lots of sunlight. Most ocean algae would be found in the water -

• on the abyssal plain

• in the oceanic trench

• above the continental shelf

• beside the continental slope

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The diagram shows a model of the ocean floor. Which number identifies the continental slope?

• 1

• 2

• 3

• 4

What do the arrows on the map represent?

• size of waves

• water density

• ocean currents

• time between tides

Tags

NGSS.MS-ESS2-6

Many species of ocean organisms live in coral reefs. The map shows that most coral reefs are found near the equator. What does the location of coral reefs suggest about coral organisms?

• corals need warm water seawater to survive

• corals mostly live around volcanic islands

• ocean currents keep corals from migrating

• most ocean waters are too deep for corals

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-3

Sailors long ago would catch the current off the coast of Virginia. This current would help them get to -

• South America

• Central America

• Europe

• Southern Africa

Tags

NGSS.MS-ESS2-6

What causes the rise and fall of ocean waters?

• the movement of clouds over the shore

• the gravitational pull of the moon and sun

• the air temperature increasing during the day

• natural events like storms and earthquakes

Tags

NGSS.MS-ESS1-1