The primary cause of Earth's seasons is:
A) changes in atmospheric thickness.
B) varying distance from the Sun, which changes how much radiation Earth receives from the Sun.
C) varying orbital speed.
D) tilt of Earth's rotation axis, which causes sun angles and daylight length to vary.
E) regular changes in radiation emitted by the Sun.
D
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Temperatures within the stratosphere
A) decrease with altitude due to radiation losses. B) increase with altitude because of the absorption of ultraviolet radiation. C) decrease with altitude according to the normal lapse rate. D) increase with altitude due to the closer proximity to the Sun. E) remain about the same from the tropopause to the stratopause.
Which of the following is NOT a drawback of burning coal for electricity?
A. Much of the coal mined is through mountain top removal and valley fill, which leads to major environmental problems near the mine sites. B. When burned, coal gives off a high amount of sulfur compounds and mercury. C. Toxic coal ash much be stored indefinitely. D. Coal reserves in the U.S. are plentiful.
Which of the following are typically shown on a weather map?
A. locations of weather systems and fronts. B. locations of weather systems, cyclones, anticyclones, and air masses. C. locations of air masses and fronts. D. locations of weather systems, air masses, fronts, and greenhouse gas concentrations.
Tornadoes most often form in the ________ of a hurricane (in the northern hemisphere)
A) Southwest quadrant B) Northeast quadrant C) Southeast quadrant D) Northwest quadrant