Which of the following describes what happens to the height of the column in a mercury barometer when surface air pressure decreases?
A. It increases.
B. It decreases.
C. It changes momentarily, but returns to its earlier reading.
D. It remains constant.
Answer: B
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Compact florescent and LED bulbs are designed to
A) produce more light than normal bulbs. B) use less electricity than incandescent bulbs to produce light. C) be powered by heat from CHP technology. D) turn off automatically when no people are in a room.
A possible stage five epidemiological transition is the stage of
A) pestilence and famine. B) receding pandemics, including possible zombie pandemics. C) degenerative and human-created diseases. D) delayed degenerative diseases. E) reemergence of infectious and parasitic diseases.
The abundance of cloudy days in January on the East Coast, particularly the Northeast can be explained by
A. dew point temperatures much greater than air temperature. B. dew point temperatures not being far below air temperature. C. dew point temperatures being much below air temperature. D. dew point temperatures equaling relative humidity values.
The finely divided, red, brown, and yellow soil-coloring minerals originate by what process?
A) mechanical weathering of very fine-grained, blue-gray clays B) mechanical weathering of the feldspars and micas in granite and rhyolite C) chemical weathering of quartz and feldspars D) precipitation of iron oxides during the chemical weathering process