Groundwater - Ch 17 ES

What percentage of the earth's fresh water is groundwater?

• 2.5%

• 30%

• 79%

• 97.5%

Which of the following is part of the water cycle?

• percolation

• transpiration

• precipitation

• all the answers

In which zone would you most likely find earthworms and chipmunks living?

• zone of saturation

• the water table

• the capillary fringe

• the zone of aeration

A water supply that flows by gravity onto the ground surface from a hillside is classified as a(n) _____________________.

• seasonal well

• spring

• artesian well

• perched water table

Rocks that contain many cracks or open spaces between their particles are ____________.

• impermeable

• permeable

• porous

• semipermeable

Which of the following materials has a low permeability

• clay

• gravel

• sand

• sandstone

The flow of groundwater is primarily influenced by _____________.

• gravity

• tectonic activity

• temperature changes

• wells

Water is safe for drinking and cooking is described as ___________.

• demineralized

• potable

• pure

• soft

Hard water

• is low in calcium

• is also called ice

• contains lots of dissolved minerals

• makes soap lather much better

Which of the following does not belong with the other three?

• a bathtub ring

• calcium and magnesium

• hard water

• soft water