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Grade 8 Natural Sciences Term 4: Earth and beyond

Grade 8 Natural SciencesPage279 in Grade 8 Natural Sciences Textbook and Workbook Use a ﬂat surface, like a large tray/ hardboard, and sand. Use the sand to demonstrate the spherical

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Page 1: Grade 8 Natural SciencesPage279 in Grade 8 Natural Sciences Textbook and Workbook Use a ﬂat surface, like a large tray/ hardboard, and sand. Use the sand to demonstrate the spherical

Grade8NaturalSciences

Term4:Earthandbeyond

Page 2: Grade 8 Natural SciencesPage279 in Grade 8 Natural Sciences Textbook and Workbook Use a ﬂat surface, like a large tray/ hardboard, and sand. Use the sand to demonstrate the spherical

BeyondthesolarsystemUniverse

Galaxies

MilkyWayGalaxy

SunCentreofoursolarsystem

Eightplanets

Dwarfplanets Asteroids Meteorites Satellites

Comets

Page 3: Grade 8 Natural SciencesPage279 in Grade 8 Natural Sciences Textbook and Workbook Use a ﬂat surface, like a large tray/ hardboard, and sand. Use the sand to demonstrate the spherical

BeyondthesolarsystemQuickfactsSatellitesareman-made,semi-independentcomputercontrolledsystems.2.1Galaxies

Galaxies:•sizesandshapesdiffer;•consistofgas,dustandanever-endingnumberofstars;•starsareheldtogetherbymutualgravitaOon(aQracOveforces);•isolatedfromsimilarsystemsbylargespaces.

Page 4: Grade 8 Natural SciencesPage279 in Grade 8 Natural Sciences Textbook and Workbook Use a ﬂat surface, like a large tray/ hardboard, and sand. Use the sand to demonstrate the spherical

Beyondthesolarsystem

2.2MilkyWayGalaxyTheMilkyWayisagalaxythatlookslikeahazybandstretchingovertheskies.OursunisoneofthestarsintheMilkyWaygalaxy.Spiral-shapedgalaxyOursunislocatedtowardstheedgeoftheMilkyWaygalaxyinoneofthespiralarms.

Page 5: Grade 8 Natural SciencesPage279 in Grade 8 Natural Sciences Textbook and Workbook Use a ﬂat surface, like a large tray/ hardboard, and sand. Use the sand to demonstrate the spherical

Page279inGrade8NaturalSciencesTextbookandWorkbook

Page 6: Grade 8 Natural SciencesPage279 in Grade 8 Natural Sciences Textbook and Workbook Use a ﬂat surface, like a large tray/ hardboard, and sand. Use the sand to demonstrate the spherical

Useaflatsurface,likealargetray/hardboard,andsand.UsethesandtodemonstratethesphericalshapeoftheMilkyWaygalaxywiththearms.UseasmallbuHontorepresentourgalaxyinoneofthearms.

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