There are trillion galaxies in the universe that no one quite exactly knows how many there are. For you to ensure you understand concepts you have learned and are ready to tackle the astronomy exam, you need to do proper revision. The quiz will do that for you. Give it a shot!
Other names for moons of the planets
Material left over from the formation of the planets
All more massive than Earth's moon
Primarily located within 1 AU of the Sun
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False
True
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Nobody likes us
We must be at the center of the universe
The universe is expanding
The sky must be dark at night
All of the above are correct
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Jupiter, Saturn, Uranus, and Neptune only
Everything past Mars and the asteroid belt
Jupiter, Saturn, Uranus, Neptune, and Pluto
Only Jupiter
Only Jupiter and Saturn
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Gravity
Energy
Radiation
Fusion
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Strong magnetic fields
Many satellites
Rings
All of these
None of these
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Non-existent
Weak
Enormous
Single pole
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It starts to collapse.
Its protostar life begins.
It begins to move off the main sequence.
Nuclear reactions start.
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The planet blotting out the light of the star.
Seeing the planets next to the star.
Traveling to the star.
Varying Doppler shifts of the stars.
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At least 13 billion years old.
Closed.
No more than 9 billion years old.
Flat.
At least 20 billion years old.
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Meteors
Meteorites
Planetesimals
Comets
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A warm starlike object that has too little mass to suppor fusion in its core.
A stage of a star's life after the white dwarf stage.
The final fate of stars like the Sun, but not less massive stars.
A stage of a star's life prior to the white dwarf stage.
The final fate of all stars.
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A contracting core of helium
Hydrogen shell burning
Expanding outer layers
All of the above
None of the above
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The larger the red shift of the galaxy, the more distance it is
The greater the distance, the fainter the galaxy is in reality
The greater the distance, the more luminous the galaxy
The more distance a galaxy, the more evolved its member stars will be
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Disks are common around young stars.
Planets are round.
The sun is the least massive object in the solar system.
Disks are rare around young stars.
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The oldest stars in the galaxy
Red giants
Main sequence stars
White dwarfs
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One second
One hour
One year
One week
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The time it takes a galaxy to move twice as far away from us
The speed at which galaxies are moving away from us
The size of the universe
The rate of expansion of the universe
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High density
High temperature
High luminosity
High mass
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Large rotation periods
Strong magnetic fields
Much mass compared to the Sun
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2.5 solar mass to 10 solar mass
3.5 solar mass to 25 solar mass
1.2 solar mass to 30 solar mass
1.4 solar to 3 solar mass
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A spherical cloud of cometary nuclei far beyond the Kuiper Belt
The gerat nebula found just below the belt stars of Orion.
A grouping of asteroids and meteoroids between the orbits of Mars and Jupiter
The circular disk of gas around the Sun's equator from which the planets formed
A flattened belt of cometary nuclei just beyond the orbit of Neptune
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1 km
1 cm
1m
10 km
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Craters in old surfaces
Orbits inside the asteroids
Very few satellites
Low average density
Small diameters
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The radius of the original neutron star before it became a black hole
The point of maximum gravity
The point at which shock waves emanate from the strong gravitational distortion the black hole creates in the fabric of spacetime
The radius at which the escape speed equals the speed of light
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Nearly vertical path
Path of constant radius
Roughly horizontal path
None of the above answers is correct
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60 solar mass
1 solar mass
0.08 solar mass
0.001 solar mass
0.5 solar mass
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Not occur in old star clusters
Repeat after some interval
All be visual binaries
Occur in regions of star formation
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The ejected envelope of a giant star surrounding the remains of a star
A planet surrounded by a glowing shell of gas
A type of young, medium-mass star
The disk of gas and dust surrounding a young star that will soon form a star system
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Supernova remnants
Planetary nebulae
The result of carbon detonation
Nebulae associated with Herbig-Haro objects
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They were moving faster in their orbits than the smaller planetesimals
Their stronger gravity would pull in more material
There was more material located near them that could be accreted
The smaller planetesimals were covered by a layer of material that was lost during collisions
All of the above
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The core heats and the star expands
The core cools and the star contracts
The core heats and the star contracts
The core cools and the star expands
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A red giant
A white dwarf
Both of the above
None of them
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4 times faster
16 times faster
2 times faster
1.2 times faster
0.25 times faster
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Dark regions at the centers of galaxies
Objects that emit very faint radio emission
Extremely luminous infrared objects
Variable X-ray sources
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Low mass
Lower
Old
Upper
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A universe 1 billion years younger than ours.
Nothing - there are no galaxies one billion light-years away from us.
Much the same universe we see today.
A universe 1 billion years older than ours.
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2.73 K
5,800 K
About 3,000 K
About 300 K
273 K
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Olbers' Paradox
General Theory of Relativity
Doppler Effect
Grand Unified Theory
Cosmological principle
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A supernova remnant.
A white dwarf.
A planetary nebulae.
A young massive star.
A globular cluster.
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By fusion in the cores of the most massive main-sequence stars
By supernovae
During the formation of black holes
During the formation of planetary nebulae
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Few swing their beam of synchrotron emission in our direction
Most have evolved to become black holes, which emit no light
Massive stars are very rare
Gas and dust efficiently block radio photons
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Mass transfer to a white dwarf
The radiactive decay of cobalt into iron
A large nova
The collapse of the core of a massive star
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The first discovered X-ray burster
A millisecond pulsar with two planets
A leading candidate for being a black hole
A binary neutron star system
An experimental spacecraft designed to travel close to the speed of light
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White dwarf, neutron star
White dwarf, black hole
Pulsar, neutron star
Neutron star, black hole
Pulsar, white dwarf
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Chemical composition of stars in the cluster
Total number of stars in the cluster
Luminosity of the faintest stars in the cluster
Color of the main sequence turnoff in the cluster
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The star rotates too quickly
The entire star pulsates from its core to its surface
The star is too massive to be stable
The outer envelope of the star pulsates
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Type-I supernova
Planetary nebula
Nova
Type-II supernova
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