CATATAN BELAJAR MAMA

  SCIENCE SA 2 PREPARATION FOR PRIMARY 4 1.        what are the parts of an electronic circuits? Battery, switch, wires, and bulbs. 2.        What are the function of these? a.        Battery : the source of electricity in a circuit. b.       Switch : controls when an electric current can flow in an electric circuit. c.        Bulb : produces light when an electric current flows through it. d.       Wires : connect one electrical part to another and allow electric currents to flow in a circuit. 3.        What are conductor and insulator? Give 3 examples of each conductor and insulator! -           Electrical conductor are materials that allow an electric current to flow through them. Ex : steel, chopper, iron, aluminium -           Electrical insulator are materials that do not allow an electri curren t to flow through them. Ex : wood, porcelain, plastic, wire, cloth 4.        What is the differences of open and closed circuits? -           Open circuit : electric