Page 20 - كتاب تاسع فيزياء الفصل 2 تفاعلي. هويدا محمود
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Y Fa  0, >e £ 1:M  x, &a   -%ra 

                                    ÔÒb; ± ¹b b ±                                                Ô»b6 M± ¹b b ±

       ÐRÊ7 ± `Ê  dÊ CÊ  ± ûÊ0; ± dÊ  EÊ ÒbÊ; ± EÊ CÊ2 ± ´»bÛ Ê2       ¹b b ± c9  E9  ­ ¼C5 ±Ò ÔR   ± _ 6 ±Ò X6; ± PÛ 4Ù 
       X ±bhÒ ³R=   ´C K92  Ù c ¯ ¶C    E C  d Ò –` R/4 ±             ´C b R Ò»P=< ± `  ÐbK 8   b Ò –Fossil fuel Ô»b6 M±
       Я a P Ù  Э `8:  ÔQ ± »R1 ± E C   c ¯ ±RÕ 3  ¥E »Cj           ]9  ÌR    C P;4  .(Ðb R8 ±Ò `= Ò»P=< ± ´C  K R Ù ’
                                                                      d C  E=9:4 ± ]9  `  H ; Ò –«±b< ± `=   ­ Z  P  K   ¹±b: ±
                                              .C  µ¹C  Z Ò
                                                                                        .E C  »RÛ    Ò –«C: ±Ò –Ðb R8 ± P=  ­
       E Òb; ± E C2 ± E2K    d  d
C
M± ¹b b ± Ïb= ±»b= ± PÛ 4Ù Ò
       –ÐC= M± W4  d  Ïb= b b9  ± ] Q Ò –(Ÿ—›› ³»b0 ±’                     ¤E= б E ¹C4: C  dgC=:=8 ± ^ Ù C6  ± ±Q  E C   C;;8: 
       ^ Ú C6:Ù  ± ^	±¹ C:<  b ­ R2/;  G=  –ÐC 4Û / Ù ÐC ¹Û C  C: Ò
        »C2/ „± c:Û  Ù  E=9:  d  –C<;  E C2 ± »RK      ÔÒb; ±         `=   ­ • d b R Ò»P=< ± D Û R: ± Ðb R8 ± P=  ­ d C  • «C  • E C 

                                   .Nuclear fission ÔÒb; ±            a ­ c9  Ô»b6 M± ¹b b ± d  R8ú 6  Э C;;8:  ] º c9  «C; 
                                                                      –E=gC=:=  E C  ^8  c9  E C2 ± ÐSÛ    b<  ¥E C29  ÐS  

                                                                                                 ©E C2 ± ]9  »P0  C  `8 Ò

                                                                      d  F C  ´C ±b= Ò ´C C ;  C C7  b  Ô»b6 M± ¹b b ±
                                                                      d C=  „± `  R= 8 ± ^8K /  ÎC : ± ^= 
 c94  .dhC: ±
                                                                      R04 ± d  F C  d  ± »C  M± `  ÔR   ± _ 69  dh»M±
                                                                      Ðb=9  (286 - 360) `=  C  ·Ò±R   ³PK   ^   Ô­ –d b R8 ±
                                                                      \ R  `  E= :/ ± E C2 ± »C  M± ]9  F    ± .E;

                                                                        .a b  c Û  Ò ´C ; ± b:  ^ ±R  ΅	 dgb1 ± ^= :  ±

        ºÊm<|fbTÐ  zTö =  owíh  oRmI  o\¬ œX  À-¼¼  ÒڍZTÐ                                           E=:9  ´C 920 

        ؍RTÐ Ð{v êÐz™GÐ ‹K Š›ew  êghÐڍgTÐ ‹X mv؍Rí                 E =  ´C;gC  `  E bÛ 8   ³¹Û C  :Fossil fuel Ô»b6 M± ¹b b ±
                                                                        .«C R<8 ± ¶C  ˆ C< ±P  
± `8: Ò –¹b b  ÏP   Ù  –ÏP7Ú  ± Q; 
        ne´ ›™T  oaýmQ  owme^<  ‰Xó m^=ô  ëÌ  n›w  ºo^ö YXô  Ómwm`h
        ì{v  Qí   o\¬ œdTm<  o\gœdTÐ  ‡ImedTÐ  ŽcK  Ú|[TÐ            Ðb R8 ± P=  ­ d C  Ô»b6 M± ¹b b ± ̱R  ± `  H ; 
                                                                      E bÛ 9  ÓR	­ ´±¼C Ò –Ô»±R  ± ½C   „± `  P S  ÔQ ±
        ‹X zS´ i™cT Åo\gœdTÐ oa\edTÐ Úm—™AÐ ï|›w ÒڍZTÐ               d  _ C   ÔQ ± F R 8 ± P=  ­ dgC;  ¼C  ^   b 9 
        owíeTÐ o\¬ œdTÐ Ñ|R ‹XË o^¬ Ydô TÐ ØÐdTР–X ëÌ           dgCÊ=:=8 ± dgb1 ± ²CÊ 1 ±Ò dÊ1:  ± R2: ± ÐbL Ê8 
                                                                      Ô»b6 M± ¹b b ± PÛ 4Ù  ] º Z Ò .(Photochemical smog)
                                       Êm<|fbTÐ Õm™hü                 `  ³R Û b : ± E C2 ± E=:Û   Я º¯ ¥E C29  C=ÕÛ 
C
­ ±»Õ P0 

                                    E=:9  ´C 920                                             .³R=   E=:Û   R Ø  4Ù  E9   ³P Ò ^ 

        `  E C  \9Ú 2Ù  E=9:  :Nuclear ¿ssion ÔÒb; ± »C2/ „±
       .E9   ^Û  ­ (R  ­ Ò­’ `=Ø ±b  c ¯ ³R=   E9=7  ³±b  »C2/ ± ΅	

ݣ ݣ
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