Why is Earth's inner core solid?
A. due to the tremendous pressure of overlying material
B. due to extremely high temperature
C. due to the spinning of earth
D. Earth formed by liquid material piling on top of a solid sphere.
Answer: A
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Which is a unique geological feature found on Mercury's surface?
a. craters b. lobate scarps c. shield volcanoes d. sinuous rilles e. basins
When ice crystals form in the clouds, ________
a. heat energy is released b. the atmosphere becomes colder c. phase change from solid to liquid occurs d. the thermal mass of the atmosphere increases
Polyethylene LCMs with long side branches results in _____________-density polyethylene.
Fill in the blank(s) with the appropriate word(s).
How many "generations" of electroweak particles are there?
A) three B) two C) four D) six E) an infinite number