Download A Star is Born – Worksheet and Key – Ben Kwok

A star is born; worksheet questions
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What are stars made of?
What causes them to form?
How do stars created energy?
How long does a main sequence star live for?
What marks the start of the death of a star?
What does the term red giant entail?
What causes the outer layers of a star to drift away?
What is a white dwarf?
Are white dwarfs very hot or very cold?
What comes after a white dwarf?
What is a supergiant star?
Is the lifespan of a supergiant longer or shorter than that of a
main sequence?
13. How big can a supergiant get?
14. What are 2 characteristics of a neutron star?
15. How many black holes have been found In human history?
A star is born; worksheet key
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What are early stars made of? Dust and gas
What causes them to form? Gravitational forces pulling dust
particles and gas together
How do stars created energy? Nuclear fusion
How long does a main sequence star live for? 10 billion years
What marks the start of the death of a star? When the star can
no longer fuse hydrgen
What does the term red giant entail? When a star increases its
size by a large amount
What causes the outer layers of a star to drift away? Loss of
atmosphere
What is a white dwarf? The remnants of a star, very hot and
dense
Are white dwarfs very hot or very cold? Very hot, will cool
down
What comes after a white dwarf? Black dwarf
What is a supergiant star? A star that is much, much bigger than
others
Is the lifespan of a supergiant longer or shorter than that of a
main sequence? Much shorter, only millions of years
How big can a supergiant get? 1000 times larger than our sun
What are 2 characteristics of a neutron star? Very small, very
high density
How many black holes have been found In human history?
None, trick question.