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

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° ­·¯¹‘»“ – ±¾–»“ ²¿—¼”»“ ­· º’ ³»“­·¢¾– ¼”°¢­· ¡ ²»“¡¡1.± °tar’s ²eginning- ³ebulae and ´rotostars2.µusion3.¶ow-·ass °tars4.¸ntermediate-·ass°tars- ¹ed ºiants5.»igh-·ass °tars- °upernovas- ²lack »oles6.»¹ ¼iagram- ·ain °equence °tars7.¸nquiry ±ctivities
°¢­· ¡All stars begin their livesas nebulae, which are hugeclouds of dust and gases,PDLQO\ K\GURJHQ DQGKHOLXP±These dust clouds bump into each other and combine.As the clouds get bigger, their gravitational pull gets strongerand they attract more particles.;QFH HQRXJK SDUWLFOHV DUH WRJHWKHU² D SURWRVWDU IRUPV<URWRVWDUV EHFRPH VWDUV DQG IXVLRQ EHJLQV
°¢­·  – ²¿—¼”»“ ´y¯¹‘ »“ԘFusion - combining two hydrogen atoms to form ahelium atom and huge amounts of energyԘEventually that fuel runs out and the star becomeseither a brown, red, or white dwarf, a neutron star,or a black holeԘCKDW WKH VWDU EHFRPHV GHSHQGV RQ LWV LQLWLDOPDVV
² ¥-µ­·¡¡ °¢­· ¡ԘBrown and red dwarfs –OHVV PDVV WKDQ RXU ?XQ³EHWZHHQ ´µ¶· RXU?XQ⁝V PDVV¸ԘUse fuel slowly - last for100 billion yearsԘNothing spectacular aboutthese guys!

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Term
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Tags
Stellar Evolution, Supernova, White dwarf, dust clouds

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