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4th Nine Weeks Exam Review Part 3 (astronomy)
Test Description: Part 3
Instructions: Answer all questions to get your test result.
1) _________ is an object whose gravity is so strong that nothing can escape it.
A
pulsar
B
neutron star
C
black hole
D
white dwarf
2) A huge group of single stars, star systems, star clusters, dust and gas bound together by gravity are
A
constellation
B
universe
C
nebula
D
galaxy
3) The sun is part of a ______ galaxy.
A
irregular
B
spiral
C
quasar
D
elliptical
4) The most massive stars collapse to from _______ when they die.
A
white dwarfs
B
neutron stars
C
black dwarfs
D
supernovas
5) Astronomers typically measure the distance to stars in
A
light-years
B
astronomical units
C
miles
D
kilometers
6) Why are many large optical telescopes located on mountains?
A
because it is easier to build telescopes on mountains
B
to be closer to the stars
C
to be above part of the atmosphere
D
to be closer to city lights
7) The solar system was formed from
A
an expanding galaxy
B
an enormous explosion
C
a black hole
D
a giant cloud of gas and dust
8) A star is born when
A
a protostar begins to cool
B
nuclear fusion starts
C
a nebula expands
D
helium and oxygen combine
9) The Milky Way galaxy is an example of a(n)
A
elliptical galaxy
B
spiral galaxy
C
globular cluster
D
irregular galaxy
10) What color are the coolest stars?
A
yellow
B
orange
C
red
D
blue-white
*select an answer for all questions
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