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Stars, Absolute Magnitude And Temperature
Test Description: This review will reinforce the relationships between a stars absolute magnitude and its temperature.
Instructions: Answer all questions to get your test result.
1) The Hertzsprung-Russell diagram shows the relationship between a stars:
A
absolute magnitude and temperature
B
magnetic field and solar flares
C
solar flares and prominence's
D
temperature and magnetic field
2) Most stars, ninety percent, on the Hertzsprung-Russell diagram are:
A
white dwarfs
B
main-sequence stars
C
supergiants
D
red giants
3) Main-sequence stars that have the highest temperatures are the:
A
largest
B
smallest
C
dimmest
D
brightest
4) Main-sequence stars that have the lowest temperatures are the:
A
brightest
B
smallest
C
largest
D
dimmest
5) The brightness of a main-sequence star is related to its:
A
density
B
weight
C
size
D
mass
6) How much more massive are the hottest blue stars when compared to our Sun?
A
100
B
50
C
25
D
75
7) How massive are the coolest red stars when compared to our Sun?
A
1
B
1/10
C
1/100
D
1/1000
8) The size of red giants can be estimated by comparing them with stars of known size and that have the same:
A
surface temperature
B
core temperature
C
atmospheric temperature
D
dark side temperature
9) Any difference in the brightness of two stars having the same surface temperature is due to their relative:
A
densities
B
orbits
C
masses
D
sizes
10) The size of a white dwarf star can be compared to the size of:
A
Saturn
B
Jupiter
C
Earth
D
Neptune
*select an answer for all questions
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