Multiple Choice
The outer core of Earth is molten, but the inner core is solid. The reason is that the
A) inner core has a different composition than the outer core, with a higher melting point.
B) lower pressure in the inner core allows the material to freeze out of the molten rock.
C) melting point of the iron-nickel mixture is raised above the actual temperature by the extremely high pressure.
D) temperature is lower in the inner core than in the surrounding region.
Correct Answer:
Verified
Correct Answer:
Verified
Q23: What process created the lunar regolith?<br>A) successive
Q24: What is the basic structure of Earth's
Q25: What is the cause of the great
Q26: Why does the ejecta blanket around some
Q27: To what does the name "Pangaea" refer?<br>A)
Q29: How do the near and far sides
Q30: The Apollo astronauts dated many types of
Q31: Why do the maria have few craters
Q32: Which one of these statements about ozone
Q33: Why is the Moon in a synchronous