Why do the tropics have a positive net radiation while the poles have a negative value? How is the energy difference equalized?
What will be an ideal response?
The latitudinal imbalance in insolation results from differences in the angle of incoming insolation, day length, seasonal variations, and albedo. The area between the tropics has high sun angle, consistent day lengths, and little seasonal variation, resulting in an energy surplus. The poles have a low sun angle, high albedo (due to snow and ice cover), long periods of darkness, and large daily and annual temperature ranges, resulting in an energy deficit. These differences drive the global circulation patterns.
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Assume that the absolute vorticity of flowing air is conserved. If air is moving northeastward, which of the following statements is correct?
A. Air will bend anticyclonically to compensate for an increase in the Earth's vorticity. B. Air will bend cyclonically to compensate for a decrease in the Earth's vorticity. C. Air will bend anticyclonically to compensate for a decrease in the Earth's vorticity. D. Air will bend cyclonically to compensate for an increase in the Earth's vorticity.
Which of the following statements best describes the concept of structural conformation?
A. changing the conformation to generate a new molecule with different chemical properties B. rearranging the shape of a molecule by rotating around bonds C. changing the structure by adding or subtracting bonds D. arranging the atom into the best conformation for the given structure E. rearranging the shape of a molecule by changing the arrangement of bonds
In 2002, after years of Portuguese and then Indonesian occupation, _________ became independent with UN help.
A. Irian Jaya B. Papua New Guinea C. East Timor D. The Moluccas
Semipermanent high and low pressure cells
A) are present during some years and absent during others B) are always present in exactly the same place C) undergo seasonal changes in position and intensity over the course of a year. D) undergo seasonal changes in intensity but not in position