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Life Cycle of Stars

Quiz Review

11.5.15

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What is a large cloud of gas and dustthat is known as the birthlace ofstars!

"ebula

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What is the hase of a star beforenuclear fusion has started!

#rotostar

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What are the two $ain gasses that$ake u our sun and $ost otherstars as well!

%ydrogen and %eliu$

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What is the star hase where nuclearfusion has begun!

&ain se'uence

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What two forces $ust be balancedfor a star to achieve hydrostatice'uilibriu$!

(ravity and ressure fro$ )usion

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What ele$ent is being fused in thecore of our sun right now!

%ydrogen fused into heliu$

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%ow $uch longer is our sun e*ectedto re$ain on the $ain se'uence!

5 billion years

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What would you e*ect the life sanof a star + ti$es the size of our sunto be!

,. -he sa$e as our sun

. &uch longer than our sun

C. &uch shorter than our sun

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Why does a star initially contractwhen it uses u all it/s hydrogen fuelin the core!

(ravity wins

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What hase of life does a s$all starenter uon using u all it/s hydrogenfuel in the core!

Red (iant

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What hase of life does a large starenter uon using u of it/s hydrogenfuel in the core!

Red Suergiant

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What hase of life is the cooling o0hase of the leftover core after thered giant hase of a s$all star!

White warf

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What is the 2nal hase of the lifecycle of a s$all star!

lack warf

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Why do scientists think that we havenot seen any black dwarfs in theuniverse yet!

3niverse isn/t old enough

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What is the na$e of the e*losionthat occurs when large stars shedtheir outer layers after the red suer

giant hase!

Suernova

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-he largest stars in the universe willend their lives as what!

lack %oles

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What is a binary star syste$!

-wo stars orbiting each other

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What is the $ost co$$on tye ofgala*y!

6llitical

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What tye of gala*y is the &ilkyWay!

Siral

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What is called when wavelengthchanges when an ob7ect is $ovingtowards or away fro$ you!

oler 60ect

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What lanet has gullies andstrea$like channels that oint to theossibility of li'uid water!

&ars

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What unit is used the $easure thedistances in the solar syste$!

,strono$ical 3nits

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What unit is usually used to $easurethe distance between stars!

Light years

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,ccording to the #tole$eic syste$ ofthe universe8 what was at thecenter!

6arth

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What force is resonsible for thefor$ation of stars!

(ravity