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