Georgia Science Grade 6

Chapter 25: Stars and Galaxies

CRCT Practice

1
The illustration shows the interior of which object?
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A)Earth
B)Saturn
C)the Sun
D)the Moon
2
Which is a group of stars, gas, and dust held together by gravity?
A)constellation
B)supergiant
C)black hole
D)galaxy
3
The most massive stars end their lives as which type of object?
A)black hole
B)white dwarf
C)neutron star
D)black dwarf
4
Which is the most abundant element in the Sun?
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A)helium
B)hydrogen
C)oxygen
D)carbon
5
How will this circle graph change as the Sun ages?
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A)The hydrogen slice will get smaller.
B)The hydrogen slice will get larger.
C)The helium slice will get smaller.
D)The circle graph will not change.
6
Which is the closest star to Earth?
A)Sirius
B)the Sun
C)Betelgeuse
D)the Moon
7
In which galaxy does the Sun exist?
A)Arp's galaxy
B)Barnard's galaxy
C)Milky Way galaxy
D)Andromeda galaxy
8
In which of the following choices are the objects ordered from smallest to largest?
A)stars, galaxies, galaxy clusters, universe
B)galaxy clusters, galaxies, stars, universe
C)universe, galaxy clusters, galaxies, stars
D)universe, stars, galaxies, galaxy clusters
9
At this scale, how many centimeters would represent the distance to a star that is 100 light-years from Earth?
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A)420 cm
B)4.2 cm
C)1 cm
D)100 cm
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