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Life Cycle of a Star
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A very massive star becomes a black hole after:
 
It has a supernova explosion
 
It freezes
 
It collides with the Sun
 
It turns into a planet.
What causes a star to shine?
 
Nuclear reactions inside the star
 
Fire from volcanoes
 
Burning coal.
 
The moon reflecting light.
The Sun is currently in which stage of its life?
 
Main Sequence
 
Protostar
 
Black Dwarf
 
Red Giant
Which of these is NOT part of a star’s life cycle?
 
Microwave
 
Nebula
 
Main Sequence
 
Red Giant
A protostar is:
 
A star that has just started to form.
 
A star that has exploded.
 
A star that has turned blue.
 
A type of planet.
Which object has gravity so strong that not even light can escape?
 
Black Hole
 
Comet
 
Planet
 
Asteroid
When a star is in the “main sequence” stage, it is:
 
Stable and burning hydrogen
 
Very new and still forming
 
Exploding
 
Turning into a Planet
A star begins its life as a large cloud of gas and dust called a:
 
Nebula
 
Comet
 
Galaxy
 
Crater
The Sun is a:
 
Star
 
Planet
 
Moon
 
Comet
What do we call the explosion of a star?
 
Supernova
 
Planetary Nebula
 
Kaboom
 
Red Giant
What causes a star to explode?
A star explodes either when it gains too much matter, or when it runs out of nuclear 'fuel'.
The hot core of the star cools and becomes a:
 
White Dwarf
 
Red Dwarf
 
Red Giant
 
Planetary Nebula
What do we call the cloud of dust that forms when the outer parts of a star drift away?
 
Planetary Nebula
 
Supernova
 
Cosmic Dust Cloud
 
Red Dwarf
What do we call the biggest stars in the Universe?
 
Red Supergiants
 
White Supergiants
 
Red Giants
 
Supernovas
What do we call stars smaller than the Sun which burn fuel more slowly and exist at cooler temperatures?
 
Red Dwarf
 
Red Giant
 
Planetary Nebula
 
Supernova
TRUE OR FALSE: Red Dwarf stars are bigger than the sun.
FALSE.
How long can a star in the Main Sequence phase stay stable?
 
Billions of years
 
100 years
 
1000 years
 
Millions of years
The life cycle of a star depends on its:
 
Size
 
Location
 
Materials
 
Something Else
How is a protostar formed?
When gas in space is pulled together by gravity to form a cloud.
What is the first stage in a star's life?
Protostar
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