BJU Earth Science E5 - Ch. 17

Stalactites and stalagmites in most caves take many hundreds or thousands of years to grow to any significant size.

Aquifers are replenished from their ___.

Freshwater conservation is necessary mainly because in many places its availability is limited.

The soapy water that your washing machine produces during a wash cycle is a form of ___ pollution.

The pH of groundwater near the surface is usually ___.

Which part of the following is part of the water cycle?

Why is the water molecule such a powerful solvent?

Briefly compare spelunkers, cavers, and speleologists.

Matching: the ground directly above the zone of saturation wetted by water from below

The water cycle not only recycles water, it also purifies it.

Water with a high concentration of dissolved calcium and magnesium compounds is called ___.

The theory of cave formation via percolation from the surface down fails to consider that the acidic water has no ___.

Matching: a curved water table caused by drawing water from a well

The complete route by which water moves between the atmosphere, oceans, and continents is called the ___

Groundwater accounts for more than 96% of the earth's liquid water.

Matching: locataed avoce the main water table and held in place by an impermeable layer

I must be able to write an essay on one of these topics. (Choose all three here.)

How would you know whether a layer of rock is permeable?

Which of the following is an icicle-shaped formation of calcium carbonate hanging from a cave ceiling?

Water usage per person in the USA is typical of that in the rest of the world.

Water that is safe for drinking and cooking is described as ___.

Whenever we use water, we end up ___ it in some way, creating a need for water treatment.

When looking to conserve water at home, we should limit the amount o fwater we use to what we ___.

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

Hard water ___.

With which of the following statements wold a young-earth speleologist disagree?

Matching: the level below which the ground is saturated

Pumice is nonporous since its holes are not connected to one another.

A naturally occurring open space underground or inside of a mass of earth materials is called a(n) ___.

Which of the following would NOT be conisdered a type of karst topography?

Water located beneath the earth's surface is called ___.

A region that has undergone extensive chemical weathering of solid rock such as limestone is known as ___ topography.

When the ions calcium and magnesium are present in hot water systems, they can create a rocklike deposit called ___.

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

Matching: the ground with open spaces, unfilled with water, above the water table

Some water can be softened just by heating it

Name ways that we use water other than for drinking.

Many creation scientists link solution-cave formation to the Genesis Flood.

Which of the following can be used to soften hard water?

Most water used for industrial cooling ___.

The most important factor that purifies waste water in a household septic leach field is ___.

Solution caves may be found in ___.

Matching: the water-filled region below the water table

A layer of rock that directs groundwater from one place to another is called a(n) ___.

Once water is polluted, it is very difficult to make it drinkable.

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

Groundwater is pure water.

Caves in soluable rock that appear to have formed by underground streams are called ___ caves.