Water Resources Quiz

Which is Earth’s largest source of drinkable water?

• lakes

• rivers

• oceans

• aquifers

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The graph shows the distribution of the freshwater resources of Earth. Which of these sources of freshwater corresponds to source 1?

• atmospheric water

• surface water

• frozen water

• groundwater

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Which of the following contains most of the water on Earth?

• the oceans

• watersheds

• the atmosphere

• ice and aquifers

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Why is storm water not as clean as we think?

• When water evaporates from the ocean salt is left behind.

• Storm drains collect run-off and everything else that is carried with it.

• When rain falls on undeveloped land it infiltrates into groundwater.

• Impervious surfaces created by continued development create more runoff.

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Which best describes the amount of Earth’s total water supply that is usable freshwater?

• less than 1%

• less than 25%

• greater than 50%

• greater than 75%

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Why is water from an aquifer more likely to be cleaner than water from other sources?

• because it forms where fresh and salt water meet

• because it receives water directly from precipitation

• because it rises to the surface near the ocean

• because pollutants are filtered by rock and soil deep within Earth.

Which best describes the characteristics of a river basin?

• the land drained by a river and its tributaries

• the land formed when rivers create estuaries and marshes

• the land at the mouth of a river where water flows into the ocean

• the land formed as a result of a river flooding

A water table well and another well going into an aquifer are shown in the diagram below. During a drought, the water table dries while the aquifer remains nearly full. Which best explains this?

• During the drought, the water table increases, but the water level in the confined aquifer increases.

• During the drought, the water table falls, but the confined aquifer is mostly isolated from the drought conditions and remains unaffected.

• During the drought, the water table remains constant, but the confined aquifer keeps its water level because of other sources of water.

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NGSS.MS-ESS2-4

This diagram shows the distribution of water on Earth. Which best describes the amount of frozen water on Earth?

• About 2% of Earth’s water is frozen.

• About 3% of Earth’s water is frozen.

• Exactly 0.9% of Earth’s water is frozen.

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NGSS.MS-ESS2-4

A family living in a house needs to dig a new well before they will have usable water. Several options for the well location are shown in the diagram below. Which location would be the best choice for the new well?

• Q

• R

• S

• T

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