A typical white dwarf is
A) as large in diameter as the Sun but only about as massive as Earth.
B) as massive as the Sun but only about as large in size as Earth.
C) about the same size and mass as the Sun but much hotter.
D) as massive as the Sun but only about as large in size as Jupiter.
B
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Scientists are in agreement that any world harboring living things must have significant quantities of:
A) helium and hydrogen. B) oxygen and nitrogen. C) some type of liquid. D) some type of sugar.
An iron core will collapse in approximately one ________ in a type II supernova event
Fill in the blank(s) with correct word
What fraction of the solar system's mass is in the Sun?
a) About 50% b) About 99% c) About 10% d) Less than 1% e) About 75%
In plate tectonics, how are trenches formed? What always accompanies them?
What will be an ideal response?