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