1. Stars on the _______ are in the normal part of their
lives, during which they produce energy by ________ in their cores.
2. The inner planets are primarily made of rock and metal
because
A) The sun’s gravity influenced
heavy materials more strongly, and pulled them toward the center of the solar
system.
B) The angular momentum of the
solar nebula flung the light elements outward.
C) Close to the sun it was too hot
for anything but rock and metal to condense.
D) None of the above.
3. A white dwarf with the same mass as the sun (1 Msun)
would be about the size of
A) A city.
B) Earth.
C) Jupiter.
D) The sun.
6. A neutron star with the same mass as the sun (1 Msun)
would be about the size of
A) A city.
B) Earth.
C) Jupiter.
D) The sun.
7. All pulsars are neutron stars.
A) True
B) False
8. The jovian planets were able to accrete gas from the solar
nebula because the availability of icy “seeds” allowed them to become massive
enough to capture it gravitationally.
A) True
B) False
9. If the sun were instantly, magically replaced with a
black hole of the same mass, Earth would be doomed, getting sucked into the
black hole.
A) True
B) False
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