A fellow classmate hands you a rock that they claim is a meteorite. What characteristics would you look for in order to confirm that the rock really is a meteorite?
A. Attracts a magnet
B. Heavy
C. A dark, smooth surface
D. All are correct
E. None of the choices are correct
Answer: D
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A geologist looks at a piece of rock from Yosemite National Park under a microscope and sees tiny crystals of olivine, pyroxene, and plagioclase feldspar. What process might have formed this rock?
A) melting underground, violent volcanic eruption, and solidification above ground B) melting underground, flowing to Earth's surface, and solidification above ground C) solidification underground, violent volcanic eruption of ash and solid rock D) both melting and crystallization underground
Air mass thunderstorms
A) extinguish themselves through the formation of extensive downdrafts. B) often last for several hours. C) are associated with severe weather. D) usually form at the borders of air masses.
When new oceanic lithosphere is generated at an oceanic ridge, what happens to the two plates on either side of the ridge?
A) The plates get larger. B) The plates get smaller. C) The plates stay the same size. D) The plates sink into the lower mantle.
Which country is the leading source of immigrants to the United States?
What will be an ideal response?