Hydrosphere: Mid Unit Review

According to the graph below, what happens to the density of a substance as its salinity increases (as you move up on the y-axis)?  (Helpful tip: pick at least 2 salinities and find their densities on the graph.  Compare.)

• As salinity increases, density stays the same.
• As salinity increases, density decreases.
• As salinity increases, density also increases.

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NGSS.MS-PS3-1

Water on Earth is either freshwater or saltwater. What is the percent ratio of freshwater to percent saltwater on Earth?

• 1% freshwater : 99% saltwater

• 3% freshwater : 97% saltwater

• 30% freshwater : 70% saltwater

• 50% freshwater : 50% saltwater

Tags

NGSS.MS-ESS2-4

How much of Earth's water is unavailable for humans to consume due to its high salinity? 

• 3%
• 23%
• 77%
• 97%

How does the amount of water circulating in the water cycle change?

• The amount of water remains constant
• The amount of water increases each time it rains
• he amount of water decreases and then increases each day
• The amount of water decreases every time evaporation occurs

Tags

NGSS.MS-ESS2-4

When water goes from being a liquid to a gas (water vapor), that process is called

• Condensation
• Evaporation
• Precipitation
• Transpiration

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When salt and freshwater mix, what is the new water substance called?

• Brackish Acid

• Fresh Water

• Brackish Water

• Salt Water

Where is most of the freshwater found on Earth?

• lakes
• glaciers
• oceans
• rivers

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

Water underground is stored in ____________.

• aquifers

• reservoirs

• wells

• depositories

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NGSS.MS-ESS3-1

Water moves through Earth's layers until it reaches a ______ layer.

• saturated

• water table

• impermeable layer

• permeable

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NGSS.MS-ESS2-4

The graphic shows that only 3% of the Earth's water is fresh water. The graphic also shows that of this 3%, almost all of it is contained in two reservoirs. What are the two reservoirs that contain almost all of Earth's fresh water?

• glaciers and groundwater

• streams and estuaries

• marshes and swamps

• lakes and rivers

Tags

NGSS.MS-ESS2-4