Class 4 Science Chapter 5 Test 3 Welcome to your Class 4 Science Chapter 5 Test 3 1. Electrical energy can be transformed into: Heat Light Sound All of these 2. When the switch is turned “ON” the path of electric current is _______ Open Complete Infinite None of these 3. 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 4. When the path of electric current is complete, the bulb is _______ ON OFF Both a & b None of these 5. In toys, torch, clock etc _______ is used. Cells Batteries Both a & b None of these 6. The path of current is called a/an electric ________. Power Energy Heater circuit 7. _______ helps us to see things. Moon Light Sound None of these 8. The system of life is working due to _______ of one form of energy into another. Creation Destroyed Transformations None of these 9. Electrical energy can be transformed into other forms of energy like: Heat Light Sound All of these 10. Sound is produced by _______ objects. Vacuum Vibrating Electrical None of these 11. How many colors are present in sunlight? 1 3 5 7 12. Electricity or electric energy is produced by _______ Water Air Generators None of these 13. Which of the following is not a form of energy? Light Sound Water Heat 14. In heater, the electrical energy changes into _______ Sound Heat light None of these 15. In loud speaker, the electrical energy changes into _______ Sound Heat light None of these Time is Up! Time's up
