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ce ce le le s s t t i i a a l l b b o o d d i i e e s s Name : Name : M M a a r r i i n n a a g g a a m m i i l l Under the supervision of : Under the supervision of : Mr. Mr. W W a a e e l l N N a a g g e e b b Class : 1-b Class : 1-b School : School : Ahmed Zweal Ahmed Zweal language school language school nasr city nasr city
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Celestial bodies science اولى اعدادى marina gamil

Jan 16, 2015

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Page 1: Celestial bodies science اولى اعدادى marina gamil

cecelelessttiiaall bbooddiieess

Name : Name : MMaarriinnaa ggaammiill Under the supervision of :Under the supervision of :

Mr.Mr. WWaaeell NNaaggeebbClass : 1-bClass : 1-bSchool : School : Ahmed ZwealAhmed Zweal language school language school

nasr city nasr city

Page 2: Celestial bodies science اولى اعدادى marina gamil
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Is theIs the distancedistance covered covered byby the lightthe light in the yearin the year =9.467x 10=9.467x 10(12(12))

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are are thethe biggestbiggest unitsunits that’s that’s the universethe universe is consistedis consisted of of

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•The galaxyThe galaxy that ourthat our solar solar systemsystem belongs tobelongs to is knownis known asas ( the milky way ) ( the milky way ) or the or the way of chopped hayway of chopped hay ) )

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•Solar system consistsSolar system consists of one star of one star which is which is the sun and 8 planetsthe sun and 8 planets

•Solar system Solar system exists in the milky exists in the milky way way

• In addition to some smaller sized In addition to some smaller sized other componentsother components

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•Are sphericalAre spherical opaque opaque bodiesbodies revolve revolve aroundaround the the sun in sun in elliptical pathelliptical path

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•Are small planetsAre small planets that that areare effected by the gravity of theeffected by the gravity of the larger planets andlarger planets and rotate around rotate around themthem

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AreAre thousandsthousands of of differentdifferent sizedsized rockyrocky massesmasses ..

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Most ofMost of them rotatethem rotate between between the two the two orbits of mars andorbits of mars and Jupiter in aJupiter in a certain regioncertain region known asknown as the wonderthe wonder asteroid asteroid beltbelt

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Are small rocky Are small rocky masses THAT masses THAT FALLFALL WITHIN WITHIN THE ATMOSPHERETHE ATMOSPHERE AND BURN DUEAND BURN DUE TO HEATTO HEAT PRODUCED FROMPRODUCED FROM THE FRICTIONTHE FRICTION WITH AIRWITH AIR

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• ARE HUGE SOLIDARE HUGE SOLID ROKY MASSESROKY MASSES THAT THAT FALLFALL AND DID NOTAND DID NOT BURN COMBLETLY BURN COMBLETLY PENETRATE THE ATMOSPHERE PENETRATE THE ATMOSPHERE SOME SOME PARTS OF THEMPARTS OF THEM REACH TO THEREACH TO THE

EARTHEARTH’’ss SURFACESURFACE

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•Are massesAre masses composed ofcomposed of rocks rocks ,,ice and solidifiedice and solidified gases gases .. They rotate They rotate aroundaround the sun in more the sun in more elongatedelongated elliptical orbits elliptical orbits intersectingintersecting with the with the orbits of planetsorbits of planets

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• A comets is consisted of a headA comets is consisted of a head contains ice spheres which iscontains ice spheres which is mixture of solidified gasses mixture of solidified gasses {carbon{carbon dioxidedioxide , , nitrogennitrogen and and methanemethane gases } and rocky parts gases } and rocky parts , , dust and dust and water molecules water molecules . .

• The second partThe second part of comets isof comets is Halley which was seen and Halley which was seen and studiedstudied in in 19861986 . .

• It completes one rotation aroundIt completes one rotation around the sun every 76 yearsthe sun every 76 years

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•The planetsThe planets of solar systemof solar system are dividedare divided into 2into 2 groups groups accordingaccording to their distanceto their distance fromfrom thethe sun sun ::

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• it is theit is the nearest tonearest to the sun andthe sun and includesincludes : :

•Mercury Mercury ,, Venus Venus , , earth andearth and marsmars

•They areThey are small solidsmall solid bodiesbodies

•Their densitiesTheir densities are high rangingare high ranging between3.3between3.3 to 5.5to 5.5 g g // cm{3} cm{3}

•They haveThey have a solid surfacea solid surface and all ofand all of them havethem have an atmospherean atmosphere except except mercurymercury

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•They are theThey are the farthest planetsfarthest planets from the from the sunsun includingincluding ::

• Jupiter Jupiter , ,Saturn Saturn ,, Uranus andUranus and Neptune Neptune •They are giantThey are giant planets becauseplanets because they arethey are

big sizedbig sized•They haveThey have lowlow densitiesdensities ranging fromranging from

0.7 to 1.3 gm0.7 to 1.3 gm / / cm{3} because they arecm{3} because they are consisted ofconsisted of gaseous elementsgaseous elements where where thethe most importantmost important ofof themthem are are hydrogen and heliumhydrogen and helium

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• Isaac NewtonIsaac Newton was the firstwas the first one whoone who discovered the earthdiscovered the earth’’ss gravity forcegravity force when he was standingwhen he was standing under under a treea tree andand found an applefound an apple falling down to falling down to the groundthe ground

• Then he provedThen he proved that there is athat there is a forceforce ofof gravity {attractiongravity {attraction force } amongforce } among objectsobjects inin thethe spacespace depends on depends on

• 1- the mass1- the mass of each objectof each object• 2- the distance2- the distance between thembetween them

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•They areThey are used forused for identifyingidentifying thethe celestial celestial bodiesbodies

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•GoodGood-bye -bye

•ThanksThanks•The work ofThe work of the twothe two

studentsstudents ::

• MMaarriinnaa GGaammiill