What is groundwater?

• Water that fills cracks and spaces in soil and rock

• Water found in rivers and lakes

• Water that evaporates into the atmosphere

• Water that is used for irrigation

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Understanding

Which material is considered impermeable?

• Sand

• Gravel

• Clay

• Granite

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Understanding

What is the unsaturated zone?

• A layer where water fills all the pores

• A layer above the water table with air and water

• A layer that holds water like an aquifer

• A layer where water cannot pass through

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Understanding

The upper level of the saturated zone is called the ______.

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Applying

What happens when pollutants leak into the ground?

• They evaporate into the atmosphere

• They are absorbed by plants

• They contaminate the groundwater supply

• They are filtered out by rocks

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Applying

To conserve groundwater, we should limit water use to avoid removing more water from an aquifer than can be naturally ______.

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Applying

What is one harmful human influence on groundwater?

• Drilling wells below the water table

• Using too much water causing the water table to lower

• Building landfills that leak pollutants

• All of the above

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Analyzing