At current rates of use, the proven reserve to run out first would be
A) natural gas.
B) coal.
C) hydroelectric power.
D) petroleum.
E) biomass.
Answer: D
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Some car batteries require the periodic addition of water. Does adding the water increase or decrease the battery's ability to provide electric power to start the car?
A. It will decrease the battery's ability to provide electrical power because water increases the surface area of the electrode in contact with the solution. B. It will decrease the battery's ability to provide electrical power because it will dilute the amount of ions in contact with the electrode. C. It will increase the battery's ability to provide electrical power because of the positive effect of diluting the ionic solution. D. It will increase the battery's ability to provide electrical power because it will decrease the number of ions in contact with the electrode.
Scientists search for fossil fuels in many ways. Sending a sound wave into the ground (by exploding dynamite, thumping the ground with a large weight, or using an electric vibrating machine) and measuring its return to the surface at receiving
stations is called ________ surveying. A) sonar B) geologic C) destructive D) seismic E) dynamite
A(n) ________ is a stream that maintains an equilibrium between the processes of erosion and deposition and, therefore degradation and aggradation
A) oxbow B) graded stream C) meandering stream D) anabranching river
Red tides are caused by ________
A) increased ocean oxygen content B) the position of the moon C) increased ocean carbon dioxide content D) sharks attacking harbor seals and walruses E) elevated nutrient levels