ساينس الصف الخامس الإبتدئي الفصل الدراسي الاول ساينس خامسة ابتدائي – ترم أول In This part we will study : We know that , there is a relation between temperature and light. Also, there is a relation between magnetism and electricity!!! Where there is : 1 – a magnetic effect of the electric current. 2 – an electric effect of the magnet. Electromagnet It is a temporary magnet which is made by the effect of electricity. The structure: 1. A bar of wrought iron. 2. A copper wire coiling around the bar of iron. 3. A dry cell (battery). 2. Idea of working: 1. When an electric current passes through the wire, the iron bar works as a magnet. 2. The electromagnet converts electric energy to magnetic energy. Uses of the electromagnet: The electromagnet is used in 1 – factories to move (lift) the heavy iron blocks as it is used for making crane (big-sized winch). 2 – making many appliances (devices) as: a. the electric bell b. the electric mixer. C. the disc drive. d. the television. لمتابعة مستر احمد الباشا وكل ما يخص الساينس : جروب الفيس بوك http://bit.ly/2Of1mcN صفحة الفيس بوك http://bit.ly/2Gq5xMo بالتوفيق مستر احمد الباشا