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