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Stars
Test Description: HR Diagram, Lifecycle of Stars
Instructions: Answer all questions to get your test result.
1) All stars begin in these clouds of gas and dust.
A
Main Sequence
B
Nebula
C
Super Nova
D
White dwarf
2) Main Sequence stars
A
are dying stars
B
have not yet begun nuclear fusion
C
contain most of the stars in the universe.
D
are cool but very luminous stars
3) Black holes are
A
an area with little to no gravity
B
the cores of dead high mass stars
C
the cores of dead low mass stars
D
planets that no longer have stars
4) The HR diagram classifies stars based upon their
A
luminosity and temperature
B
brightness and distance
C
mass and gravitational pull
D
chemical makeup and distance
5) Stars are mainly composed of
A
nitrogen
B
carbon
C
hydrogen
D
helium
6) The lifecycle of a star is determined by the star's
A
initial mass
B
distance to Earth
C
place in the universe
D
color and brightness
7) A protostar
A
is a fetal star that has yet to begin fusion reactions
B
is an old expanding star
C
is a dead star that no longer emits light
D
is an area of space with gravity so great not even light can escape it
8) A red giant is very bright but very cool because
A
it is very close to Earth
B
it is small in size
C
it is large in size
D
it is very far from Earth
9) A white dwarf star is very small and dim, but very hot because
A
these stars are very young
B
these stars are very tiny
C
these stars are very bright
D
these stars are very massive
10) Which of the following statements is most accurate about the lifecycle of stars?
A
All stars live for the same lifespans.
B
New stars are born and old stars die in the universe constantly.
C
All stars began their lives at the start of the universe.
D
No stars that have been born have died yet.
*select an answer for all questions
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