Class 4 Science Chapter 5 Test 3 Welcome to your Class 4 Science Chapter 5 Test 3 1. Electrical energy can be transformed into other forms of energy like: Heat Light Sound All of these 2. The temperature of hot objects is _______ than the temperature of cold objects. Smaller Greater Lower None of these 3. In loud speaker, the electrical energy changes into _______ Sound Heat light None of these 4. The electricity supplied to our homes through _______ Wi Fi Signals Mechanical energy Wires Signals 5. _______ helps us to see things. Moon Light Sound None of these 6. The path of current is called a/an electric ________. Power Energy Heater circuit 7. If you take your hand nearer to the lighted lamp than to the wall, the shadow of your hand: Will not form. will be smaller. Will be bigger Will be the same size 8. Sound is produced by _______ objects. Vacuum Vibrating Electrical None of these 9. How many colors are present in sunlight? 1 3 5 7 10. We hear echo when sound: Reaches us direct from the source comes after bouncing back from a wall at a certain distance. Comes from a loud speaker Is very loud 11. When the path of electric current is complete, the bulb is _______ ON OFF Both a & b None of these 12. When the switch is turned “ON” the path of electric current is _______ Open Complete Infinite None of these 13. In heater, the electrical energy changes into _______ Sound Heat light None of these 14. Which of the following is not a form of energy? Light Sound Water Heat 15. Electricity or electric energy is produced by _______ Water Air Generators None of these Time is Up! Time's up
