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1)
What
is the absolute magnitude of a star?
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a)
the luminosity of a star
b)
the apparent magnitude a star would have if placed at a distance of 10
parsecs from Earth
c)
the brightness of a star
d)
the apparent magnitude of a star if placed at a distance of 1 parsec
from Earth
e)
the apparent magnitude of a star if placed at a distance of 1AU from
Earth
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2)
The gradual accumulation of
mass of a star is usually called:
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a)
mass accumulation
b)
accrediation
c)
accutulation
d)
accretation
e)
accludation
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3)
apparent magnitude is:
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a)
a measure of the observed light flux received from an object at the
Earth
b)
a measure of the observed e/m radiation received per second
c)
the flux density at a distance of 10 parsecs from Earth
d)
the flux density at a distance of 1 parsec from Earth
e)
the flux density at a distance of 1AU from Earth
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4)
Arc seconds are:
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a)
very small fractions of time
b)
bits of Noah's vessel that have been previously sold
c)
very small angles, there are 60 arc seconds in one degree
d)
very small angles, there are 100 arc seconds in one arc minute
e)
very small angles, there are 60 arc seconds in one arc minute
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5)
the presumed final state of
evolution of a low mass star in which no radiation is emitted is:
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a)
black hole
b)
black dwarf
c)
red dwarf
d)
nebula
e)
supernova remnant
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6)
a region in space where
escape velocity is equal to or greater than the speed of light - thus
nothing - including radiation can escape from it
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a)
black hole
b)
black dwarf
c)
red dwarf
d)
nebula
e)
supernova remnant
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7)
expanding cloud of
radioactive material formed when the outer layers of an exploding star
are blasted away ...
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a)
black hole
b)
black dwarf
c)
red dwarf
d)
nebula
e)
supernova remnant
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8)
A cloud of gas and dust from
which stars form...
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a)
black hole
b)
black dwarf
c)
red dwarf
d)
nebula
e)
supernova remnant
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9)
a star that has greatly
increased in size and has a relatively cool surface
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a)
black hole
b)
black dwarf
c)
red giant
d)
nebula
e)
supernova remnant
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10)
What is the minimum velocity
an object must achieve to break free from the gravity of another body?
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a)
event horizon
b)
expansion velocity
c)
escape velocity
d)
general relativity
e)
kinetic energy
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11)
The event horizon is:
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a)
the massive inertial surface of a black hole
b)
the virtual surface around a black hole within which gravity prevents
anything from escaping
c)
the outward velocity away from the central point of an explosion
d)
a shell of gas ejected from and expanding away from a star that is
nearing the end of it's life
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12)
the Hertzsprung-Russell
diagram is ...
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a)
a plot of absolute magnitude versus apparent magnitude for a group of
stars
b)
a plot of temperature versus spectral type for a group of stars
c)
a plot of temperature versus apparent magnitude for a group of stars
d)
a plot of absolute magnitude versus spectral type for a group of stars
e)
a plot of apparent magnitude versus spectral type for a group of stars
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13)
In the H-R diagram, white
dwarfs are found ...
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a)
top right
b)
bottom left
c)
mid right
d)
top left
e)
bottom right
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14)
In the H-R diagram,
supergiants are found ...
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a)
top right
b)
bottom left
c)
mid right
d)
top left
e)
bottom right
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15)
In the H-R diagram, red
giants are found ...
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a)
top right
b)
bottom left
c)
mid right
d)
top left
e)
bottom right
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16)
In the H-R diagram, O class
stars are found ...
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a)
top right
b)
bottom left
c)
mid right
d)
top left
e)
bottom right
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17)
In the H-R diagram, M class
stars are found ...
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a)
top right
b)
bottom left
c)
mid right
d)
top left
e)
bottom right
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18)
Where are most stars located
in the H-R diagram?
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a)
main curve
b)
top left
c)
top right
d)
at the lowest temperatures
e)
main sequence
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19)
stars are powered by:
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a)
fusion - in which hydrogen is broken into helium
b)
fission - in which hydrogen is broken into helium
c)
fission - in which helium is broken into hydrogen
d)
fusion - in which helium is broken into hydrogen
e)
fusion - in which hydrogen is joined to become helium
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20)
a parsec is:
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a)
very small angle, there are 60 arc seconds in one arc minute
b)
the distance light travels in a year
c)
the average distance between the Earth and the Sun
d)
a distance equal to 3.2616 light years
e)
the parallax angle subtended by the Earth and the Sun between January
and July
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21)
An old, high mass star that
is greatly expanded from its original size is:
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a)
supergiant
b)
red giant
c)
white dwarf
d)
supernova
e)
supernova remnant
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22)
A catastrophic explosion of
a star which can cause it to shine brighter than a galaxy for a few
weeks is:
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a)
supergiant
b)
red dwarf
c)
white dwarf
d)
supernova
e)
supernova remnant
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23)
expanding cloud of
radioactive material formed when the outer layers of an exploding star
are blasted away
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a)
supergiant
b)
red giant
c)
white dwarf
d)
supernova
e)
supernova remnant
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24)
a star that has exhausted
most or all of its fuel, collapsed into a size similar to the Earth.
It is near to the end of its evolution
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a)
supergiant
b)
red giant
c)
white dwarf
d)
supernova
e)
supernova remnant
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25)
stars that spin rapidly,
have the mass of 1.4 times the sun and are about 10 miles in diameter
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a)
neutron stars
b)
pulsars
c)
quasars
d)
neutron stars and pulsars
e)
all of the above
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