Hydrogeology

Which types of aquifers are in the most danger of becoming contaminated by pollutants?

• aquifers confined by a permeable layer
• unconfined aquifers

The materials that make up Aquifers A and B are

• permeable
• impermeable

Which well(s) end(s) in a saturated zone?

• 1 and 2
• 1 only
• 4 and 5
• 1,3 and 5

A well in which groundwater rises because of pressure is called a(n)

• spring well
• geyser well
• artesian well
• cry well

An aquifer is a(n)

• well in which water rises because of pressure
• underground layer of rock or sediment that holds water
• type of hot spring from which the water periodically erupts
• place where groundwater bubbles or flows out of cracks in the rock

People can obtain groundwater by drilling a well

• above the water table
• into an aquifer
• into the unsaturated zone
• into an impermeable layer

Materials that allow water to pass through them easily are

• unsaturated
• impermeable
• saturated
• permeable

Wetlands help control flooding by

• absorbing runoff from heavy rains
• collecting water behind dams
• providing natural water filtration
• quickly releasing water

Glaciers are capable of:

• significant erosion
• significant deposition
• modification of landscape
• all of these

At present, what percentage of Earth's land surface is covered by glaciers?

• 10%
• 50%
• 5%
• 0.1%