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