Dergiler / Journal of Turkish Science Education / 2008 / Cilt: 5 - Sayı: 1Investigating Grade 8 Students’ Conceptions of ‘Energy’ and Related ConceptsNecati HIRÇA,Muammer ÇALIK,FİKRET AKDENİZDergiJournal of Turkish Science EducationSayı2008 · Cilt: 5 - Sayı: 1Sayfa75–87DOI—