The largest explosions in Earth's history were a result of:
A) radioactivity in Earth's core.
B) Earth-crossing asteroids.
C) nuclear weapons.
D) volcanoes.
Correct Answer:
Verified
Q2: A comet is best described as a:
A)
Q3: Astronomers discover an icy body in our
Q4: A body passing through Earth's atmosphere that
Q5: Arrange the following types of planets in
Q6: Pluto is closest in mass to:
A) Ceres.
B)
Q8: Among the terrestrial planets,which of the following
Q9: A Solar System body with a dozen
Q10: A meteor shower occurs when:
A) an asteroid
Q11: Most of the dwarf planets in our
Q12: A bright,extended object appears in the sky
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