What is the Earth's greatest distance from the sun?
a. Apogee
b. Perigee
c. Aphelion
d. Perihelion
ANS: C
The difference between aphelion and perihelion, the shortest and greatest distance from the sun, is
approximately 3.7 million kilometers. The distance of both the sun and the moon can have profound
effects on the tides. Information can be found in the section Tides Are Forced Waves Formed by
Gravity and Inertia
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Japan probably was the result of rifting of a small continental block from mainland Asia causing
a back-arc basin. Indicate whether the statement is true or false.
Which of the following layering in rocks are Tectonic Foliation?
a. Slaty cleavage b. Schistocity c. Gneissic banding d. All of the above e. Both a and b
Which of the following natural threats to human health is least predictable, meaning that there is usually the least amount of lead time before a disaster?
A) Earthquakes, tsunamis, and tornados B) Forest fires C) Hurricanes and floods D) Severe snowstorms
Ecologists have learned that succession is influenced by many factors other than climate alone including
A. invasive species, human land use history, and seed dispersal. B. biogeochemical cycles, available oxygen, and superfund sites. C. slope, wind patterns, and toxicity levels. D. the evolution of new species.