Consider the single-cell model of the general circulation of the atmosphere. Which of the following statements describes an assumption of this model?
A. The Earth's surface is covered with land and water.
B. The Earth is not perfectly spherical in shape.
C. The sun is always overhead at the North Pole.
D. The Earth does not rotate.
Answer: D
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What is the sequence of crystallization along the discontinuous branch of Bowen's reaction series?
A. framework, double chain, single chain, sheet, isolated B. quartz, potassium feldspar, biotite C. olivine, pyroxene, amphibole, biotite D. sodium-rich to calcium-rich plagioclase E. silicic, felsic, mafic, intermediate
Topographic maps often have some contour lines that are darker than other contour lines. These darker lines are called
A. contour intervals. B. index contours.
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.
Which of the following is true when comparing MRI with X-ray imaging?
A) Both techniques are equally useful to image soft tissue. B) Both techniques are equally useful to image hard tissue. C) MRI is useful in imaging soft tissue and X-ray imaging is useful for imaging hard tissue. D) MRI is useful in imaging hard tissue and X-ray imaging is useful for imaging soft tissue.