Asteroids,Meteors&CometsOhMy!

DONOW– HWdueThursday!• 1.Whatisthehottestplanet?Whydoesitgetsohot?

• 2.Whataretwomaindifferencesbetweentheinnerplanetsandtheouterplanets?

• 3.Whatmakesitimpossibleforlifetoexistontheouterplanets?

• 4.Explaintheheliocentrictheoryofthesolarsystem.Whattwoscientistsdidwelearnaboutwhosupportedthistheory?

• 5.WhatdoestheEarth’srotationcause?WhatdoestheEarth’srevolutioncause?

SmallerObjectsintheSolarSystem• Planetsarenottheonlypartofthesolarsystem!–Asteroids,Meteors,Comets,andDwarfPlanetsarealsoimportantpartsofthesolarsystem!

• Theseareallheldtogetherinthesystemaroundthesun,alongwiththeplanets.–HOWDOTHESESMALLEROBJECTSDIFFER?

WhathappenedtoPluto?ItisnowconsideredaDwarfPlanet

• Thinkback!– whatkindofstartwasawhitedwarf?• DwarfPlanetsaretoosmalltoberealplanets,buttoolargetobeasteroids,meteorsorcomets.– Ceresisadwarfplanetthatweusedtothinkwasanasteroidbecauseisfoundintheasteroidbelt.

– Plutousedtobeaplanet,butisnowconsideredadwarfplanetbecauseitistoosmall.

Comets• AcometisasmallpieceofICEROCKANDDUSTthatorbitthesuninanellipse.

• Wecanseetheminouterspace,butCometsDONOTentertheearth’satmosphere.Theystayinouterspace!

CometsCan’tTaketheHeat!DryIceDemo

• Whenacometgetsclosetothesun,theygethotandstarttomelt– Thisiswhatcausesthecomettohaveatail

• DryIceDemo– Whathappenswhenthedryiceishitbythewarmairfromtheblowdryer?• Thisislikewhathappenswhenthecometgetstooclosetothesun!

PartsofaComets

• Coma- frontofthecomet• Nucleus- centerpartofthehead• Tail- endofthecomet

BrainPop- comets

C-O-M-E-TSong!

• Cometsareverycold(Crossarmsinfrontofchestandshakelikeyou'recold)A"dirtysnowball"I'vebeentold(Pretendtopackandthenthrowasnowball)

C-O-M-E-T(3x)Cometsareverycold(Crossarmsinfrontofchestandshakelikeyou'recold)

Thecoma&tailsshinelikegold(Wigglefingersinfrontofyoulikethetail)Thesunmakestheirgasesexplode(Raiseupbotharmstosignalanexplosion)

C-O-M-E-T(3x)Thecoma&tailsshinelikegold(Wigglefingersinfrontofyoulikethetail)

Ice,dust,androcktobehold(Holdoutbothhandswithpalmsup)AnellipticalorbitHalley'sCometstrolled(Moveindexfingeraroundinan

ellipticalshape)C-O-M-E-T(3x)

Ice,dust,androcktobehold(Holdoutbothhandswithpalmsup)

Asteroids• Asteroidsare

LARGE chunksofrockandmetalthatorbitthesun.

- Mostofthechunksorrockandmetalinspacecametogetherlongagotoformtheplanetsandmoons.-Asteroidsareleft-overpiecesofrockfromwhenthesolarsystemwasformed.-- http://www.brainpop.com/science/space/asteroids/

-GuidedPracticeAsteroidReading.

Wheredowefindasteroids?• InTheAsteroidbelt!

– Mostasteroids travelinthewidegapbetweentheinnerplanetsandouterplanets

– RIGHTBETWEENMARSANDJUPITER!

CheckforUnderstanding

AB

CD

E

Whicharrowispointingtowheretheasteroidbeltislocated?

AsteroidsLifeCycle

• Likestars,asteroidsgothroughdifferentstages

• Thisisbecausepiecesofthemstartbreakingoffandenterearth’satmosphere.

Asteroid

Meteoroid

Meteor

MeteoriteEndsonEarth’sSurface!

StartsinOuterSpace!

FromAsteroidto….Meteoroid MeteorMeteorite

• Meteoroid- Smallchunksofrockthatorbitthesun.Brokeofffromanasteroid.

• Meteor– Whatwecallameteoroidwhenitfallsintoearth’satmosphere.

– Theygiveoffaburstoflightbecausetheystartburningupinearth’satmosphere.

– Peoplealsocallthemshootingstars.Whyisthisabadname?

FromAsteroidto….MeteoroidMeteor Meteorite

• Meteorite–Whatwecallameteorwhenithitstheearth’ssurface

FromAsteroidto….MeteoroidMeteorMeteorite

RememberingthedifferencebetweenMeteoroid,Meteor,Meteorite

• MeteorOID – “I’minSPACE!”–MeteoroidsaresmallchunksofrockthatareSTILLinouterspace

• MeteOR – “I’minyourFACE”–MeteorshavestartedtocomeintoEarth’sAtmosphere

• MeteorITE – “I’veHITyourPLACE”–Meteoriteshavehittheearth’ssurface

PracticeandExitTicket

• Useyournotestocompletethegraphicorganizerandanswerthequestionsonthelastpageofyourguidednotes.

• Atthebottomofyourguidednotes,completeyourexitticket– 3thingsyoulearnedtoday– 2questionsyoustillhave– 1thingyoufoundthemostinterestingandwhy

Answer:ComparingAsteroids,Comets,andMeteORs

Asteroids Comets MeteorsWhatisitMadeof?

Made of rock and metal

Made mostly of ice, and have tails

Made of rock and metal

Doesitstayinouterspace?

Stay in space

Stay in space

Fall into Earth’s atmosphere

Isitorbitingthesun?

Orbit the sun

Orbit the sun

Gravity pulls to Earth; they burn up as they fall

Last5

• ReviewIt• ExitTicket• CleanUp• PackUp• LineUp

Asteroids,Meteors,CometsDay2

DONOW– HWdueThursday!

1. Whatarethestagesofanasteroid’slifecycle?Listanddescribeeachstep.

2. Listthe2placeswherecometsarelocated3. Describethegeocentrictheoryofthesolar

system?Why/Howwasthismodelofthesolarsystemprovenincorrect?

4. Whatarethreemajordifferencesbetweentheinnerandouterplanets?

5. WhyisVenussohot?

Asteroids&CometsQuickReview

• 1.Answerquestions1and2inyourguidedNotes

• 2.ListentotheBrainpop videoandseeifyoucanfillintheblanksintheparagraphinyourguidednotes.–http://www.brainpop.com/science/space/asteroids/

Asteroid/CometStations• Roomisdividedintotwostations– AsteroidsandComets

• Eachstationwillhave15minutestocompleteitsactivities,andthenyouwillswitch.

• Yourexitticketwillfollowattheend.

Last5

• Reviewit• ExitTicket• CleanUp• PackUp• LineUp