Question 1

Which of the following correctly describes the distribution of Earth’s freshwater?

Accepted Answer

69% glaciers & icecaps, 30% groundwater, 1% all other freshwater

Answer

69% groundwater, 30% rivers & lakes, 1% all other freshwater

Answer

50% glaciers & icecaps, 30% groundwater, 10% rivers & lakes, 10% biosphere

Answer

80% glaciers & icecaps, 10% groundwater, 5% rivers & lakes, 5% all other freshwater

Question 2

Most of the Earth’s fresh water is found in …

Accepted Answer

Glaciers and ice sheets

Answer

lakes and ponds

Answer

rivers and streams

Answer

groundwater

Question 3

What do divides separate?

Accepted Answer

river basins

Answer

permeable rock layers

Answer

wells

Answer

aquifers

Question 4

A watershed is land that is drained by …

Accepted Answer

a water/river system

Answer

an alluvial plain

Answer

a septic tank

Answer

glaciers

Question 5

What does an aquifer allow to happen?

Accepted Answer

The flow and storage of groundwater

Answer

Increase porosity in hard materials

Answer

Rivers not to flood

Answer

The decrease of friction in impermeable rocks

Question 6

Which of the following is necessary for an aquifer to form?

Accepted Answer

A layer of permeable rock

Answer

An artesian well

Answer

A high water table

Answer

High levels of precipitation

Question 7

Water that collects in permeable rock layers beneath the surface of the Earth is called …

Accepted Answer

groundwater

Answer

springs

Answer

precipitation

Answer

surface water

Question 8

The water table is the boundary of what?

Accepted Answer

The zone of aeration and saturation

Answer

Between the artesian formation and spring

Answer

The base of the river and the start of a delta

Answer

The zone of percolation and evaporation

Question 9

Granite does not allow water to flow through it.  Granite is an example of …

Accepted Answer

impermeable rock

Answer

an aquifer

Answer

a spring

Answer

permeable rock

Question 10

Which of the following are indicators of a healthy water system?

Accepted Answer

Low temperature, high dissolved oxygen & neutral pH

Answer

Low turbidity, high pH, and high temperature

Answer

Low pH, high nitrates, & low dissolved oxygen

Answer

High nitrates, low pH & low temperature

Question 11

What does it mean when a scientist says a lake has a high turbidity?

Accepted Answer

The water is very murky with sediment

Answer

The water is very acidic

Answer

The water can support many organisms

Answer

The water is very clear

Question 12

Which of the following would be an example of a bio-indicator?

Accepted Answer

dead fish

Answer

Cloudy water

Answer

Nitrates and phosphates

Answer

A pH reading of 14

Question 13

Which of the following is a clear example of point-source pollution?

Accepted Answer

Oil spill from a supertanker

Answer

Salts from irrigation

Answer

Trash floating in ocean water

Answer

Waste in a river

Question 14

Which of the pollution examples below is of nonpoint-source pollution?

Accepted Answer

Chemical runoff from lawns

Answer

Chemicals released from paper mills

Answer

Oil leaking from a storage tank

Answer

Wastewater from a leaking pipe

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