Post on 05-Dec-2014
description
Samantha Wingate
The Life of a Star
http://en.wikipedia.org/wiki/File:The_life_of_Sun-like_stars.jpg
What is a Star?
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
The Sun The Sun 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
Classifying Stars Stars are classified according to their temperature and brightness.
Hot Stars are Blue or WhiteCooler Stars are Red or Orange
Classifying Stars Cont…
A young 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.
The Timeline of a 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
How Stars Are Born
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.
Where Stars are Born
The EagleNebula
http://en.wikipedia.org/wiki/File:Eagle_nebula_pillars.jpg
The Death of Stars
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
The Death of Stars 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.
After a Star Explodes…
The CrabNebula
http://en.wikipedia.org/wiki/File:Crab_Nebula.jpg
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_lookout_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