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Chapter 21 Quiz Review
Test Description: This is review for your upcoming chapter 21 review. Have fun.
Instructions: Answer all questions to get your test result.
1) What chart compares a star's surface temperature to its brightness?
A
a Fujita scale
B
a spectrograph
C
a Hertzsprung-Russell diagram
D
an anenometer
2) A light year is a measure of what?
A
time
B
absolute magnitude
C
temperature
D
distance
3) _____ is the apparent change in position of an object when viewed from different places.
A
composition
B
parallax
C
absolute magnitude
D
nebula
4) This objects has such great gravity that no electromagnetic energy can escape.
A
supernova
B
nebula
C
black hole
D
white dwarf
5) The process by which a star greates energy is ____
A
transpiration
B
combustion
C
nuclear fusion
D
nuclear fission
6) Large mass stars have shorter lives because
A
they burn their fuel at a higher rate
B
they always have higher surface temperatures
C
small stars use a different type of energy production
D
they are usually older and less energy efficient
7) What kind of star is the sun?
A
a supergiant
B
a main sequence
C
a red giant
D
a white dwarf
8) Differences between apparent brightness and absolute brightness are due to
A
its spectrogram
B
a star's age
C
the type of galaxy
D
the distance from Earth
9) Stars begin as a cloud of dust and gas called a
A
black hole
B
nebula
C
white dwarf
D
supernova
10) The Milky Way galaxy has what shape?
A
irregular
B
random
C
elliptical
D
spiral
11) What is the fuel in our sun?
A
helium
B
hydrogen
C
oxygen
D
carbon
12) What characteristic are scientists trying to determine when they use a spectrograph?
A
star's size
B
star's composition
C
star's temperature
D
star's position
13) When an star is moving away from us, what happens to the apparent wavelength of the light it emits?
A
we don't know
B
it decreases
C
in increases
D
it stays the same
*select an answer for all questions
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