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20 questions
Everything revolves around ___________.
stars
moons
planets
galaxies
Stars are made of mostly which two gases?
Hydrogen and Nitrogen
Hydrogen and Helium
Hydrogen and Oxygen
Hydrogen and Carbon
A star is born in a cloud of gas and dust called a __________
asteroid
galaxy
black hole
nebula
Stars give off heat and light in a process called ___________.
nuclear fusion
luminosity
supernova
spectroscopy
In the process of nuclear fusion, hydrogen atoms combine to form ___________ atoms.
nitrogen
helium
carbon
oxygen
The luminosity of a star describes its ______________.
brightness
age
temperature
color
Stars that are much bigger than the Sun are called _______________.
red supergiants
main sequence
white dwarfs
nebulae
Stars that are much smaller than the Sun are called _________________.
main sequence
white dwarfs
red supergiants
nebulae
What happens when a massive star's life ends?
dead star
supernova
black hole or neutron star
white dwarf
What is the name of the explosion at the death of a massive star?
Supergiant
Black Hole
Supernova
Nebula
What word best describes our sun?
Average
Dwarf
Supergiant
Red Giant
a massive ball of gas held together by gravity with a core so hot that nuclear fusion occurs
white dwarf
black hole
star
galaxy
Why do other stars appear so much smaller than the sun?
They are much smaller
They are not as bright
They are so far away
They are dwarf stars
Our solar system is in which galaxy?
The Clouds of Magellan
The Milky Way
Andromeda
Betelguese
All stars begin their life as a____
Main Sequence
Protostar
Nebula
Black Dwarf
______ is a force that causes dust particles to stick together in a nebula.
nuclear fusion
hydrogen
gravity
friction
A gigantic explosion that causes the death of a large star is called___.
pulsar
supernova
red giant
black hole
A star at the stage in its life cycle when it stops burning hydrogen, begins burning helium, and expands to a large, low-density star. What stage in the life cycle does this describe?
Supernova
Main Sequence
Black Hole
Red Giant or Red Supergiant
This is a young star that glows as gravity brings it together.
Nebula
Main-sequence star
Protostar
Red giant
What is the name of the largest stars?
Protostars
Red Giants
Supergiants
Dwarf Stars
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