Which of the following elements is most common in the Earth's crust?
Answer: Oxygen
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A steel section of the Alaska pipeline was recorded to shrink by 3.4 cm on a cold day. If the same section were twice as long, shrinkage would be
A. more than 6.8 cm. B. 6.8 cm. C. also 3.4 cm. D. 0.17 cm.
The U.S. and Canadian core manufacturing region contains cities such as Boston, Buffalo, and:
A) Denver B) Montreal C) San Diego D) Nashville
What is the difference between magma and lava?
A. Lava is above the Earth's surface, whereas magma is below. B. Magma is colder than lava. C. Lava is gassier than magma. D. Magma has a higher silicate content than lava. E. There is no difference between magma and lava.
In the middle latitudes of the Northern Hemisphere, a ________ pressure cell develops over the ocean in winter and a ________ pressure cell develops in summer.
A. low; high B. high; low C. low; low D. high; high E. Either high; low or low; high can occur.