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WorksheetsStars (March 2019)
Total questions: 20
Worksheet time: 10mins
What is a star (in astronomy)?
What is the correct definition of a star?
a fixed luminous point in the night sky which is a large, remote incandescent body like the sun.
a celestial body moving in an elliptical orbit around a star.
a small rocky body orbiting the sun. Large numbers of these, ranging in size from nearly 600 miles (1,000 km) across (Ceres) to dust particles, are found (as the asteroid belt ) especially between the orbits of Mars and Jupiter, though some have more eccentric orbits, and a few pass close to the earth or enter the atmosphere as meteors
the natural satellite of the earth, visible (chiefly at night) by reflected light from the sun.
What star type is the sun?
G2V
G3V
G1V
G0V
What is the closest star to the Sun?
Sol
Proxima Centauri
Alpha Centauri A
Alpha Centuari B
How can a star die.
Supernova
Hypernova (Collapsar)
Humans
nuclear bomb
What is the largest star? (discovered by mankind)
The Sun
R136a1
UY Scuti
OGLE-TR-122b
What is the most massive star? (discovered by mankind)
UY Scuti
R136a1
Sun
OGLE-TR-122b
A star can be smaller than a planet.
True
False
What will become of the Sun's core after its death?
It will be come a black hole
It will become a white dwarf slightly larger than the Earth
It will become a black dwarf slightly larger than the Earth
It will become a pulsar, neutron star or magnetar
It will transform into another star or planet
What is the smallest star? (discovered by mankind)
EBLM J0555-57Ab
OGLE-TR-122
Antares
Arcturus
How do stars emit energy?
Nuclear Fusion/Fission
E=mc
E=mc^2
fire
What is the hottest star type?
D-type (White dwarf)
O-type
B-type
A-type
G-type
What type of star is the sun?
Main-Sequence
Main-Sequence Dwarf
Supergiant
Hypergiant
White dwarf
What color is the sun
White
Yellowish-white
Whitish-yellow
Technically all colors mixed together/all the colors of the rainbow.
What phase is the sun currently in?
(average mass) middle age star
(large mass) middle age star
red super-giant
blue super-giant
blue hyper-giant
What happens to the core of a massive star between 8 and 20 solar masses? (1 solar mass equals the mass of the sun)
all of these
How old is the sun?
4 billion years
8 years
6000 years
approximately 5 billion years
How far are we from the sun? (semi-major axis)
150 million km
93 million miles
1.496 million km
92.95713 million miles
How long does it take light (from the sun) to reach earth?
8.3 seconds
8.3 minutes (nearly 500 seconds)
1 second
0 seconds
1 hour
What are the type of galaxies?
Spiral
Irregular
Elliptical
Dwarf (sub-classification mainly for irregular galaxies)
all of these
