Dramatic variations in the polar ice caps most likely suggest changes in ___________.

• the moon's orbit

• Earth's climate

• ebb and flow of tides

• global water consumption

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NGSS.MS-ESS2-4

NGSS.MS-ESS3-5

Seawater is typically denser than freshwater due to seawater’s _______________.

• higher salinity

• lower freezing point

• smaller mass

• greater depth

What is the main cause of subsurface ocean currents?

• differences in the topography along the ocean floor

• differences in density of ocean water

• the rotation of Earth on its axis

• movement of the jet stream

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NGSS.MS-ESS2-6

Most water leaves the ocean through evaporation and returns to the ocean through _____.

• surface runoff

• ground water

• transpiration

• precipitation

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NGSS.MS-ESS2-4

Rivers, springs, and aquifers are all_____________.

• frozen in winter

• human-made sructures

• located above ground

• sources of fresh water

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

What is the most likely effect if six new wells are installed as the population increases?

• The limestone layer will collapse.

• The shale layer will shrink.

• The aquifer will increase in volume.

• The water table will drop.

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NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

NGSS.MS-ESS3-4

Which picture shows the first stage of river development?

• A

• B

• C

• D

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NGSS.MS-ESS2-2

What is most responsible for the presence of ground water in an area?

• movement of water from aquifers into surface water

• movement of surface water and precipitation through soil

• the movement of water from streams and rivers to watersheds

• the movement of surface water through impermeable rock

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

About 99.7% of all water on Earth is found in oceans, ice, and the air. Which is most accurate?

• The Earth’s freshwater supply is infinite.

• Less than 0.3% of Earth’s water is drinkable.

• Humans are not dependent on ocean water.

• The water cycle returns all usable water to the sea.

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NGSS.MS-ESS2-4

Which of these would most likely occur as the ice caps melt?

• The Earth would become cooler.

• The sea would cover more land.

• The rivers would flow more rapidly.

• The rain would be more acidic.

Tags

NGSS.MS-ESS2-2