Quiz #2: Basic
Quiz #2: Basic

Answer each question by selecting the correct blue button. Only the first answer selected is graded.

1.  A bone sample contains 1/4 of its original radioactive Carbon-14 content. How old is the bone sample?

A. 1 Carbon-14 half-life
B. 2 Carbon-14 half-lifes
C. 9 Carbon-14 half-lifes
D. 4 Carbon-14 half-lifes

2.  Base your answer on the data table below. The data table provides information about the Moon, based upon current scientific theories. Which Moon feature is an impact structure?

A. mantle
B. maria plain
C. terrae highland
D. crater

3.  High concentrations of anaerobic bacteria (biologic water pollutants) are often caused by a decrease in the:
A. temperature of ground water
B. growth of aerobic bacteria in the water
C. amount of organic wastes in the water
D. amount of oxygen dissolved in the water

4.  The wastewater from a coal, gas, oil and nuclear power plants raises the temperature of a nearby bodys of water, the concentration of biologic pollutants in the bodys of water will most likely:
A. decrease
B. increase
C. remain the same
D. have no effect

5.  The direct cause of ground water supplies becoming unfit for human use is usually:
A. an controllable moisture deficit
B. contamination of the saturated zone
C. excessive surface runoff
D. very heavy precipitation

6.  How will the quality of the environment most likely be affected by the continued dumping of large amounts of industrial waste into a river?

A. The environment will be unaffected
B. Minor, temporary distruptions will occur only near the industrial plant
C. Major damage could occur downstream from the industrial plant
D. The environment will always adjust favorably to any changes by industrial waste

7.  A landfill is most likely to directly pollute:
A. water vapor over the landfill
B. precipitation about to fall on the landfill
C. surface streams flowing to the landfill
D. groundwater under the landfill

8.  Base your answer on the Moh's mineral hardness scale and the chart below showing the appropriate hardness of some common objects. Which statement is best supported by this scale?

A. A fingernail will scratch calcite, but not quartz
B. A fingernail will scratch quartz, but not calcite
C. A piece of glass can be scratched by quartz, but not by calcite
D. A piece of glass can be scratched by calcite, but not by quartz

9.  The map below shows the area surrounding a meandering stream. At which point is erosion the greatest?

A. choice (A)
B. choice (B)
C. choice (C)
D. choice (D)

10.  Base your answer on the topographic map below. Points X,Y, and Z are locations on the map. Elevations are expressed in meters. Mill River generally flows toward the:

A. southeast
B. southwest
C. northeast
D. northwest

Grade exam.