WhAt Is A sTaR

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WhAt Is A sTaR

explain its life cycle
By Casey Sokor Elle White
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...Contents...
What is a star
Birth of a star
Stars life cycle
Why stars twinkle
Red giant
White dwarf
Quiz
Bibliography
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..What Is A Star..

• A Star is made of
• Hydrogen Gas
• Dust
• Gas
• Meteor Dust

A star is a sun burning millions of miles
away. Stars can be other galaxies suns and stars.
Back
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!BIRTH OF A STAR!
Stars start as an exploded black hole. Stars are
born in a cloud of gas and dust. Stars need
hydrogen gas to form. 27,000,000C is the
temperature needed to form a star.
Back
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stars life cycle
another diagram
Back
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life cycle of a star
Back
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why stars twinle

• The proper name for stars that twinkle is called
  stellar scintillation
• Stars twinkle because we see them from earths
  surface threw thick layers of turbulent air.
• Light is bent when it hits a change in density.
• Most stars will not appear to twinkle if viewed
  from outer space

Back
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Red Giant

• A red giant is 1000 times bigger then the sun.
• It is 1000 10,000 times hotter.
• The stars temperature near the core rises and
  this causes the size of it to expand

Sun
Back
Red Giant
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White Dwarf

• A white dwarf is also called a degenerate dwarf.
• White dwarfs are the 2nd last satge of a sun-like
  star
• A white dwarf is a core of a dying star

Back
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QUIZ
Question 1 Question 2 Question 3 Question
4 Question 5 Contents
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YOU'Re RIGHT!!! go to next question
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YOU'Re WRONG TRY AGAIN
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Question 1
What size is our sun? A Large B Medium C Small
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Question 2
What is a star made of? A Dads chest hair B
Greenhouse Gas C Hydrogen Gas
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Question 3
How much hotter is a red giant compared to the
sun? A up to 100,000 B up to 10,000 C its the
same
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Question 4
What's the proper name for a stars twinkle? A
stellar scintillating B stellar scintillation C
twinkle
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Question 5
What does a star become when it dies? A either a
white dwarf or it black hole B white dwarf or
a red giant C goes into a black hole or turns
into a red giant
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Star pictures Hubble Site Gallery Star
Collection http//hubblesite.org/gallery/album/s
tar_collection/pr2005035a/ (online) http//hubbles
ite.org/gallery/album/star_collection/pr2007004a/
(online) http//hubblesite.org/gallery/album/star_
collection/pr2007010a/web (online) http//hubblesi
te.org/gallery/album/star_collection/pr1998038a/
(online) http//hubblesite.org/gallery/album/sta
r_collection/pr2005002e/ (online) http//hubblesit
e.org/gallery/album/star_collection/pr2003024a/
(online) http//hubblesite.org/gallery/album/star_
collection/pr1997033a/ (online) http//hubblesite.
org/gallery/album/star_collection/pr2005035b/
(online) http//hubblesite.org/gallery/album/star_
collection/pr1998028e/ (online) Wikipedia
stars http//en.wikipedia.org/wiki/Stars (online)
Zoom Astronomy http//www.enchantedlearning.com/
subjects/astronomy/ (online) life cycle of
stars http//www.enchantedlearning.com/subjects/a
stronomy/stars/lifecycle/ (online) Red
Giant http//en.wikipedia.org/wiki/Red_giant
(online) White Dwarf http//en.wikipedia.org/wiki
/White_dwarf
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THE END by casey and ellie