lesson_3_-_the_life_and_death_of_stars.pdf - Space – The...

° ­·¯¹‘»“ – ±¾–»“ ²¿—¼”»“ ­· º’ ³»“­·¢¾– ¼”
°¢­· ¡ ²»“¡¡
1.
± °tar’s ²eginning
- ³ebulae and ´rotostars
2.
µusion
3.
¶ow-·ass °tars
4.
¸ntermediate-·ass
°tars
- ¹ed ºiants
5.
»igh-·ass °tars
- °upernovas
- ²lack »oles
6.
»¹ ¼iagram
- ·ain °equence °tars
7.
¸nquiry ±ctivities

°¢­· ¡
All stars begin their lives
as nebulae, which are huge
clouds of dust and gases,
PDLQO\ K\GURJHQ DQG
KHOLXP±
These dust clouds bump into each other and combine.
As the clouds get bigger, their gravitational pull gets stronger
and they attract more particles.
;QFH HQRXJK SDUWLFOHV DUH WRJHWKHU² D SURWRVWDU IRUPV
<URWRVWDUV EHFRPH VWDUV DQG IXVLRQ EHJLQV

°¢­·  – ²¿—¼”»“ ´y¯¹‘ »“
Ԙ
Fusion - combining two hydrogen atoms to form a
helium atom and huge amounts of energy
Ԙ
Eventually that fuel runs out and the star becomes
either a brown, red, or white dwarf, a neutron star,
or a black hole
Ԙ
CKDW WKH VWDU EHFRPHV GHSHQGV RQ LWV LQLWLDO
PDVV

² ¥-µ­·¡¡ °¢­· ¡
Ԙ
Brown and red dwarfs –
OHVV PDVV WKDQ RXU ?XQ
³EHWZHHQ ´µ¶· RXU
?XQ⁝V PDVV¸
Ԙ
Use fuel slowly - last for
100 billion years
Ԙ
Nothing spectacular about
these guys!