Our Solar System: Theories - Weebly · 2018-09-07 · Review: What is a Solar System? • Universe...
Transcript of Our Solar System: Theories - Weebly · 2018-09-07 · Review: What is a Solar System? • Universe...
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OurSolarSystem:Theories
2/24/17
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DONOW—HWDUETODAY1.Whatarethethreetypesofgalaxies?Describeeach.2.Compareandcontrastthe2theoriesoftheuniverse.3.Orderthefollowinginorderfrombiggesttosmallest:galaxy,planets,sun,moon.4.Whatarethe5stepsforthebigbangtheory?5.ExplainwhyastarbecomesaRedGiant—whatishappeningtoit?6.Explainwhatastaris—whatisitmadeofandhowdoesitstaytogether?
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Reminders:
QuizWednesday3/1—study!– TheoriesoftheUniverse– TypesofGalaxies– TheoriesoftheSolarSystem– Planets(inner/outer)
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Review:WhatisaSolarSystem?
• Universeà Galaxyà SolarSystemàSun/Planets/Moons
• Asolarsystemisastar,andalloftheplanetsandotherobjectsthatorbitthatstar.– Oursunisastar,andtheEarthisoneoftheplanetsthatorbitsit.
– BUTHAVEPEOPLEALWAYSBELIEVEDTHIS?????
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TheGreatDebate:ModelsofOurSolarSystem
• ActorsandActresseswillbepickedatrandom!• Lookunderyourdesks!• Lettheshowbegin!
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AnswerQuestionsinGuidedPractice
7.WhatwasthefirstdiscoverythatGalileomade?Whydoesthissuggestthatthesuncouldbethecenterofthesolarsystem?
8.Whatmodelofthesolarsystemdowenowknowtobetrue?
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Ptolemy’sModeloftheSolarSystem:
GeocentricModelGeoisGreekforEarth
à Inthismodel,Earthisatthecenterofthesolarsystemandeverythingelseintheuniverseorbited(traveledaround)theearth
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Copernicus’ModeloftheSolar
System:
HeliocentricModelHeliosisGreekforSun
àInthismodel,theSUNisthecenterofthesolarsystemandtheEarthandotherplanetsorbitaroundtheSUNincircles.
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Galileo’sProofoftheHeliocentricModel
1.Jupiter’smoonsrevolvearoundit!
2.OurviewofVenusfromEarthchangeslikethephasesofthemoon.
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ISAYGEOYOUSAY
•EARTH
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ISAYHELIOYOUSAY
•SUN
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StopandJotConnectourlessonsonthescientificmethodwithourlessontodayon
SolarSystemTheories.
Fromwhatyouhaveseenandheardtodayandfromwhatyousawinyourlabsthepreviousclass,doscientifictheorieschangeovertime?Whydotheychangeovertime?
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Howisthisdebaterelatedtothescientificmethod?
• Theoriesareideasbackedbyevidence– Butthatdoesnotmeanthattheycannotbewrong!
• Scientistsarealwaysdiscoveringnewthings,andwhennewthingsarediscovered,theorieshavetochange.(Thinkofourmysterylab!)– Thatisthenatureofscience!
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Catalyst– HWdueFriday;quizFriday
1. Whatdoestheprefix“geo-”mean?2. Explainthegeocentricmodelofthesolarsystem.3. Whatdoestheprefix“helio-”mean?4. Explaintheheliocentricmodelofthesolarsystem.5. Whatarethe3typesofgalaxies?Explaineach.6. Whatarethe2theoriesoftheuniverse?Explain
eachone.7. Listthestepstoformastar?8. Whatarethenamesofthe3constellationsthatwe
learnedabout?
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