Star Evolution. Order them youngest to oldest A F E D B C.
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Transcript of Star Evolution. Order them youngest to oldest A F E D B C.
![Page 1: Star Evolution. Order them youngest to oldest A F E D B C.](https://reader036.fdocuments.net/reader036/viewer/2022062423/5697bfa91a28abf838c9a252/html5/thumbnails/1.jpg)
Star Evolution
![Page 2: Star Evolution. Order them youngest to oldest A F E D B C.](https://reader036.fdocuments.net/reader036/viewer/2022062423/5697bfa91a28abf838c9a252/html5/thumbnails/2.jpg)
Order them youngest to oldest
A
FE
D
B C
![Page 3: Star Evolution. Order them youngest to oldest A F E D B C.](https://reader036.fdocuments.net/reader036/viewer/2022062423/5697bfa91a28abf838c9a252/html5/thumbnails/3.jpg)
Order them youngest to oldest
F
E
H
DB C
G
A
![Page 4: Star Evolution. Order them youngest to oldest A F E D B C.](https://reader036.fdocuments.net/reader036/viewer/2022062423/5697bfa91a28abf838c9a252/html5/thumbnails/4.jpg)
Answer: D, F, H, C, A, G, E, & B
F
E
H
DB C
G
A
![Page 5: Star Evolution. Order them youngest to oldest A F E D B C.](https://reader036.fdocuments.net/reader036/viewer/2022062423/5697bfa91a28abf838c9a252/html5/thumbnails/5.jpg)
Life cycle of a star
• Stars age as they run out of hydrogen fuel.
• Large stars go through 5 main stages.
![Page 6: Star Evolution. Order them youngest to oldest A F E D B C.](https://reader036.fdocuments.net/reader036/viewer/2022062423/5697bfa91a28abf838c9a252/html5/thumbnails/6.jpg)
Stage 1
• All stars are “born” or begin in a large cloud of gas and dust called a nebula.
![Page 7: Star Evolution. Order them youngest to oldest A F E D B C.](https://reader036.fdocuments.net/reader036/viewer/2022062423/5697bfa91a28abf838c9a252/html5/thumbnails/7.jpg)
Stage 2
• A star will spend most of its life at this stage, main sequence. Hydrogen (H) undergoes nuclear fusion in the core.
![Page 8: Star Evolution. Order them youngest to oldest A F E D B C.](https://reader036.fdocuments.net/reader036/viewer/2022062423/5697bfa91a28abf838c9a252/html5/thumbnails/8.jpg)
Stage 3• When the H starts to run out, the star will
expand and cool down forming a red giant.
![Page 9: Star Evolution. Order them youngest to oldest A F E D B C.](https://reader036.fdocuments.net/reader036/viewer/2022062423/5697bfa91a28abf838c9a252/html5/thumbnails/9.jpg)
Red Super Giant Star in Orion Constellation
![Page 10: Star Evolution. Order them youngest to oldest A F E D B C.](https://reader036.fdocuments.net/reader036/viewer/2022062423/5697bfa91a28abf838c9a252/html5/thumbnails/10.jpg)
Stage 4
• Eventually, expanding will stop and the red supergiant will collapse violently, causing a bright supernova to appear.
![Page 11: Star Evolution. Order them youngest to oldest A F E D B C.](https://reader036.fdocuments.net/reader036/viewer/2022062423/5697bfa91a28abf838c9a252/html5/thumbnails/11.jpg)
Stage 5 (large star)
• As the core collapses, the gravity in the center is so strong, nothing can escape.
• Even light is trapped, producing a black hole.
![Page 12: Star Evolution. Order them youngest to oldest A F E D B C.](https://reader036.fdocuments.net/reader036/viewer/2022062423/5697bfa91a28abf838c9a252/html5/thumbnails/12.jpg)
Stage 5 (small star)
• Small stars (like our sun) will collapse into a small, Earth sized star giving off dim light as a white dwarf.
http://www.youtube.com/watch?v=iauIP8swfBY&feature=related
![Page 13: Star Evolution. Order them youngest to oldest A F E D B C.](https://reader036.fdocuments.net/reader036/viewer/2022062423/5697bfa91a28abf838c9a252/html5/thumbnails/13.jpg)
Order them youngest to oldest
A
FE
D
B C
![Page 14: Star Evolution. Order them youngest to oldest A F E D B C.](https://reader036.fdocuments.net/reader036/viewer/2022062423/5697bfa91a28abf838c9a252/html5/thumbnails/14.jpg)
Answer: A, F, D, C, then E or B
A
FE
D
B C
![Page 15: Star Evolution. Order them youngest to oldest A F E D B C.](https://reader036.fdocuments.net/reader036/viewer/2022062423/5697bfa91a28abf838c9a252/html5/thumbnails/15.jpg)
![Page 16: Star Evolution. Order them youngest to oldest A F E D B C.](https://reader036.fdocuments.net/reader036/viewer/2022062423/5697bfa91a28abf838c9a252/html5/thumbnails/16.jpg)
![Page 17: Star Evolution. Order them youngest to oldest A F E D B C.](https://reader036.fdocuments.net/reader036/viewer/2022062423/5697bfa91a28abf838c9a252/html5/thumbnails/17.jpg)
![Page 18: Star Evolution. Order them youngest to oldest A F E D B C.](https://reader036.fdocuments.net/reader036/viewer/2022062423/5697bfa91a28abf838c9a252/html5/thumbnails/18.jpg)
Which stages are missing? Why?
![Page 19: Star Evolution. Order them youngest to oldest A F E D B C.](https://reader036.fdocuments.net/reader036/viewer/2022062423/5697bfa91a28abf838c9a252/html5/thumbnails/19.jpg)
Star Evolution