The amount of gravitational force that acts on the space shuttle while in orbit is
A) nearly zero.
B) almost as much as the shuttle's weight on Earth's surface.
C) the same as the shuttle's weight on Earth's surface.
B
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Surface processes of weathering and erosion tear the land down. What builds it up?
A) actions of plate tectonics B) deposition C) both a and b D) none of the above
Oxygen can be depleted from a body of water by ____.
A. viruses and parasitic worms B. biodegradable wastes C. sediments and suspended matter D. compounds such as oil, plastics, solvents, and detergents E. photosynthetic organisms
Which of the following is MOST likely associated with fair weather?
a. high pressure area b. low pressure area c. a cold front d. a warm front e. large storm systems
What is the important measure from weather radar that gives the intensity of the precipitation?
A) time of the echo B) brightness of the echo C) number of echoes from a single point D) height of the echo E) none of the above