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Class vii-science- heat by sanjib roy
- 1.
- 2. a¡f a¡f ¢L? a¡f HLfËL¡ll nn¢¢šš²zz kk¡¡ NNËqËqee LLll−−mm hÙ ¹¥ Nlj qu, Hhw hSÑe Ll−m hÙ ¹¥ W¡ä¡ quz
- 4. a¡fj¡oe¡ ¢L ? a¡fj¡oe¡ qm hÙ¹¥l a¡f£u AhÙÛ¡z a¡fj¡oe¡ h¡ Eo·a¡ f¢lj¡−fl k¿»−L b¡−jÑ¡¢jV¡l hh−−mmzz a¡fj¡oe¡l −úm :- p¡d¡lea −k −úm…¢m −h¢n fËQ¢ma a¡ qm, −p¢¾V−NËX h¡ −pm¢pu¡p −úm (C ¢X¢N)Ë Hhw g¡−leq¡CV −úm (F ¢X¢N)Ë z
- 5. ¢LÓ¢eLÉ¡m h¡ X¡š²¡¢lb¡−jÑ¡¢jV¡l : −k b¡−jÑ¡¢jV¡l ¢c−u Bj¡−cl nl£−ll a¡fj¡oe¡ j¡f¡ qu a¡−L ¢L¢Ó eLÉ¡m h¡ X¡š²¡¢l b¡−jÑ¡¢jV¡l hh−−mmzz ¢¢LLÓ¢Ó¢eeLLÉÉ¡¡mm bb¡¡−−jjÑÑ¡¡¢¢jjVV¡¡−−ll −−ppmm¢¢ppuu¡¡pp −−úú−−mm a¡fj¡oe¡l f¡õ¡ 35¢X¢NË −p¢¾V−NËX −b−L 42¢X¢NË −p¢¾V−NËX Hhw g¡−leq¡CV −ú−m 95¢X¢NË g¡−leq¡CV −b−L 110¢X¢NË −p¢¾V−NËX g¡−leq¡CV fkÑ¿¹ b¡−Lz
- 6. j¡e¤−ol nl£−ll ü¡i¡¢hLa¡fj¡oe¡ −pm¢pu¡p −ú−m 37¢X¢N Ë −p¢¾V−NËX Hhw g¡−leq¡CV −ú−m 98.6¢X¢N Ë g¡−leq¡CVz XX¡¡šš²¡¡¢¢ll bb¡¡−−jjÑÑ¡¡¢¢jjVV¡¡−−llll ff¡¡õõ¡¡ 3355¢¢XX¢¢NN Ë Ë −−pp¢¢¾VV−−NNËXËX −b−L 42¢X¢N Ë −p¢¾V−NËX qu −Le ?
- 7. X¡š²¡¢l b¡−jÑ¡¢jV¡−ll f¡õ¡35¢X¢NË −p¢¾V−NËX −b−L 42¢X¢NË −p¢¾V−NËX qu L¡le −L¡e S£¢ha j¡eh−c−ql a¡fj¡oe¡ HC f¡õ¡l h¡C−l −−kk−−aa ff¡¡−−llee¡¡zz AbÑÉ¡v ü¡i¡¢hL AhÙÛ¡u j¡eh−c−ql a¡fj¡oe¡ 35¢X¢N Ë −p¢¾V−NËX Hl ¢e−Q h¡ 42¢X¢N Ë −p¢¾V−NËX Hl Ef−l qu e¡z
- 9. mÉ¡h−lV¢l b¡−jÑ¡¢jV¡l :- j¡eh−cq R¡s¡ AeÉ¡eÉ hÙ¹¥l a¡fj¡oe¡ −k dl−el b¡−jÑ¡¢jV¡l ¢c−u j¡f¡ qu a¡−L mÉ¡h−lV¡¢l b¡−jÑ¡¢jV¡l h−mz mÉ¡h−lV¢l b¡−jÑ¡¢jV¡−ll ff¡¡õõ¡¡ pp¡¡dd¡¡lleeaa 1100¢¢XX¢¢NN Ë Ë −−pp¢¢¾VV−−NNËXËX Ë Ë −b−L 110¢X¢N Ë −p¢¾V−NËX fkÑ¿ ¹ quz ¢h¢iæ b¡−jÑ¡¢jV¡l ¢h¢iæ E−Ÿ−nÉ hÉhq©a quz Bhq¡Ju¡l f§hÑ¡i¡−p p−hÑ¡μQ J phÑ¢ejÀ −k a¡fj¡oe¡l E−õM Ll¡ qu a¡ f¢lj¡−fl b¡−jÑ¡¢jV¡l −L N¢lø J m¢Oø b¡−jÑ¡¢jV¡l hm¡ quz
- 12. a¡f p’¡me :- HL¢V hÙ¥¹ −b−L AeÉ HL¢V hÙ¹¥−a a¡f fËh¡¢qa qJu¡−L a¡f p’¡me h−mz c¢¤ V h¡ a−a¡¢dL hÙ¥l¹ j−dÉ a¥me¡j§mL i¡−h Nlj hÙ¥¹ −−bb−−LL WW¡¡ää¡¡ hhÙÙ¥¹¥l¹ ¢¢cc−−LL aa¡¡ff ffËhËh¡¡¢¢qqaa qquuzz a¡f ¢ae¢V fÜ¢a−a p’¡¢ma quz 1) f¢lhqe 2) f¢lQme 3) ¢hL£le
- 16. f¢lh¡q£ fc¡bÑ :- −k ph fc¡−bÑl j−dÉ ¢c−u a¡f pq−SC Qm¡Qm Ll−a f¡−ll aa¡¡−−ccll aa¡¡−−ffll ff¢¢llhh¡¡qq££ hh−−mmzz Ec¡qle :- −m¡q¡, AÉ¡m¤¢j¢eu¡j, a¡j¡ CaÉ¡¢c
- 17. Lf¥ ¢lh¡q£ h¡A¿¹lL fc¡bÑ :- −k ph fc¡−bÑl j−dÉ ¢c−u a¡f pq−S Qm¡Qm Ll−a f¡−le¡ a¡−cl hh−−mm aa¡¡−−ffll LL¥f¥f¢¢llhh¡¡qq££ hh¡¡ AA¿¹l¹lLL fc¡bÑz Ec¡qle :- fÔ¡¢ØVL, L¡W CaÉ¡¢cz
- 18. deÉh¡c L¡¢jj¢¢ee LL¥j¥j¡¡ll¢¢ppwwqq −−jj−−jj¡¡¢¢lluu¡¡mm EEμμQQaall j¡dÉ¢jL ¢hcÉ¡mu