Why are most asteroids not spherical?
A. Strong magnetic fields in their molten core make them lumpy.
B. Their gravity is too weak to pull them into a sphere and they have been fragmented by impacts.
C. The Sun's gravity distorts them.
D. The statement is false. Nearly all asteroids are spherical.
Answer: B
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All of the following are elements of the Sustainability Eight except:
a. Reduce car use. b. Buy or grow organic food. c. Use a car for two years while it runs well, and then discard it for a newer model. d. Reduce meat consumption. e. Buy locally grown food.
Which of the following is the name for snowflakes and ice crystals falling from high cirriform clouds?
A. snow squalls B. graupel C. fallstreaks D. snow flurries
When a star collapses to become a black hole, its mass
A. decreases. B. increases. C. remains unchanged.
Elevation affects the distribution of terrestrial biomes through its effect on
A) temperature. B) precipitation. C) both temperature and precipitation. D) neither temperature nor precipitation.