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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
neutron star
B
white dwarf
C
pulsar
D
black hole
2) A huge group of single stars, star systems, star clusters, dust and gas bound together by gravity are
A
nebula
B
galaxy
C
universe
D
constellation
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
supernovas
B
black dwarfs
C
white dwarfs
D
neutron stars
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
because it is easier to build telescopes on mountains
B
to be above part of the atmosphere
C
to be closer to city lights
D
to be closer to the stars
7) The solar system was formed from
A
an expanding galaxy
B
a black hole
C
a giant cloud of gas and dust
D
an enormous explosion
8) A star is born when
A
a nebula expands
B
helium and oxygen combine
C
nuclear fusion starts
D
a protostar begins to cool
9) The Milky Way galaxy is an example of a(n)
A
elliptical galaxy
B
irregular galaxy
C
spiral galaxy
D
globular cluster
10) What color are the coolest stars?
A
red
B
yellow
C
blue-white
D
orange
*select an answer for all questions
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