Star formation

Star formation

• 1.
  The Life ofa Star
• 2.
  What is aStar? • A star is a huge sphere of very hot glowing gas. • When stars are grouped together we call them constellations. • The big dipper is constellation that we see often. http://en.wikipedia.org/wiki/File:Big_dipper_from_the_kalalau_lookout_ at_the_kokee_state_park_in_hawaii.jpg
• 3.
  The Sun • TheSun is the only star in our solar system • All eight planets, comets, and an asteroid belt, revolve around the Sun. • The Sun is a yellow, medium sized star. http://en.wikipedia.org/wiki/File:Yohkohimage.gif
• 4.
  Classifying Stars •Stars areclassified according to their temperature and brightness. •Hot Stars are Blue or White •Cooler Stars are Red or Orange
• 5.
  Classifying Stars Cont… •Ayoung star is called a dwarf star •They can be colored red, yellow, or white. • Our Sun is a yellow dwarf •Older Stars are called Supergiants •They can be colored red or blue.
• 6.
  The Timeline ofa Star • Our Sun is an average star. The chart below shows the lifecycle of our sun over billions of years. http://en.wikipedia.org/wiki/File:Solar_Life_Cycle.svg
• 7.
  How Stars AreBorn • Star are formed from giant clouds of dust and gas. • Then, from gravity, the cloud collapses into a rotating gaseous ball. • Once the new star gets hot enough it will begin to create energy from a process called nuclear fission. • This created energy allows the star to glow for billions of years.
• 8.
  Where Stars areBorn • The Eagle Nebula http://en.wikipedia.org/wiki/File:Eagle_nebula_pillars.jpg
• 9.
  The Death ofStars •A Star dies when it runs out of gases to burn. •The Star will first expand into a red, super giant. http://en.wikipedia.org/wiki/File:Betelgeuse_star_%28Hubble%29.jpg
• 10.
  The Death ofStars Cont… •Then the Star will collapse and explode. • This takes billions of years. •The size of the star determines how long it’s life is. • The bigger the star the shorter the life.
• 11.
  After a StarExplodes… • The Crab Nebula http://en.wikipedia.org/wiki/File:Crab_Nebula.jpg
• 12.
  References • Picture References •Text References http://en.wikipedia.org/wiki/File:The_life_of_Sun-like_stars.jpg "Ask an Astronomer for kids!." Ask an Astronomer for kids!. Web. 25 Feb 2010. . <http://coolcosmos.ipac.caltech.edu/cosmic_kids/AskKids/star.shtml>. http://en.wikipedia.org/wiki/File:Big_dipper_from_the_kalalau_looko ut_at_the_kokee_state_park_in_hawaii.jpg http://en.wikipedia.org/wiki/File:Yohkohimage.gif "Star Types." Zoom Astronomy. 2010. Enchanted Learning, Web. 1 Mar 2010. <http://www.enchantedlearning.com/subjects/astronomy/stars/startypes.shtml>. http://en.wikipedia.org/wiki/File:Solar_Life_Cycle.svg http://en.wikipedia.org/wiki/File:Eagle_nebula_pillars.jpg http://en.wikipedia.org/wiki/File:Crab_Nebula.jpg http://en.wikipedia.org/wiki/File:Betelgeuse_star_%28Hubble%29.jpg