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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
white dwarf
C
black hole
D
neutron star
2) A huge group of single stars, star systems, star clusters, dust and gas bound together by gravity are
A
universe
B
nebula
C
constellation
D
galaxy
3) The sun is part of a ______ galaxy.
A
quasar
B
irregular
C
elliptical
D
spiral
4) The most massive stars collapse to from _______ when they die.
A
black dwarfs
B
supernovas
C
neutron stars
D
white dwarfs
5) Astronomers typically measure the distance to stars in
A
kilometers
B
miles
C
light-years
D
astronomical units
6) Why are many large optical telescopes located on mountains?
A
to be above part of the atmosphere
B
because it is easier to build telescopes on mountains
C
to be closer to the stars
D
to be closer to city lights
7) The solar system was formed from
A
a giant cloud of gas and dust
B
an expanding galaxy
C
an enormous explosion
D
a black hole
8) A star is born when
A
nuclear fusion starts
B
helium and oxygen combine
C
a protostar begins to cool
D
a nebula expands
9) The Milky Way galaxy is an example of a(n)
A
elliptical galaxy
B
spiral galaxy
C
irregular galaxy
D
globular cluster
10) What color are the coolest stars?
A
blue-white
B
red
C
yellow
D
orange
*select an answer for all questions
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