Transcription of Natural Sciences Grade 8 - CNX
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Natural Sciences Grade 8By:Siyavula UploadersNatural Sciences Grade 8By:Siyavula UploadersOnline:< >C O N N E X I O N SRice University, Houston, ( ).Collectionstructurerevised:Septemb er12,2009 PDFgenerated:Octob er28,2012 Forcopyrightandattributioninformationfor themo dulescontainedinthiscollection, egin.. electricity.. ower.. cabularyforelectricity.. erature.. ectionandrefractionoflight.. cksofmatter.. ounds.. oundsandmixtures.. :habitat.. opulation.. erentecosystems.. ecialfo o drelationships..135 Attributions.. 140ivAvailableforfreeatConnexions< >Chapter 1 Term :ELECTRICITY, dule1:Energytob : (J). Therearetwomaintyp esofenergy: TheenergyofactionormotionisknownasKINETI C energy Theenergyofp ositionisknownasPOTENTIAL energy Energyalsoo ccursinvariousforms, :Chemicalenergy,whichisobtainedfromchemi calsubstanceslikep etroleum,oil,gas,batteriesandfo o d-stu s;Electricalenergy,whichisderivedfromele ctricity;Soundenergy,fromloudsp eakersRadiantenergy, , erenttyp [ , , ]AssignmentInthefollowinglist, < >.
and nitrogen dioxide these can bind with moisture in the air and cause acid rain. Burning coal to generate electricity cannot be seen as a "clean" method and is harmful to nature because of the resultant air pollution, acid rain and particles of ash pumped into the air. 1.3 Hydroelectricity 3 1.3.1 NATURAL SCIENCES 1.3.2 Grade 8
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