2nde Anglais Devoir 1 Semestre 2 CEG Ouenou 2018 2019

Page1sur3 I-Informations Générales II-Compétences à évaluer CDn°2:Réagirde façon précise et appropriée àunmessage lu. CDn°3: Produirede façon appropriée d’untexte de typesetdefonctions variés. III-Epreuve Contexte: L’histoire, c’est un récit réel ou imaginaire. Ainsi, tu auras à réagir face à un texte qui te parle del’histoire de l’énergie. Support: Text:HISTORY OF ENERGY . 1-Inphysics,energy (Ancient Greek:íẎñaaéá(energeia≫activity, operation≫) is an indirectlyobserved quantity. It is often understoodas the abilitya physical systemhas todoworkon other physicalsystems. Since works is defined asa force actingthrough a distance (a length of space), energy isalways equivalent to the ability to exert pulls or pushes against the basic forces of nature, along a path of a certain length. 2-In the context of physical sciences, several forms of energy have been defined. These include: Thermal energy, thermal energy in transit is calledheat Chemical energy Electric energy Radiant energy, the energy ofelectromagnetic radiation Nuclear energy Magnetic energy Elastic energy Sound Energy Mechanical energy Mass (E=mc 2 ) These forms ofenergymay be divided into two maingroups; Kinetic