Class 4 Science Chapter 5 Test 3 Updated: 12 Jun 2022 59 Welcome to your Class 4 Science Chapter 5 Test 3 1. In toys, torch, clock etc _______ is used. Cells Batteries Both a & b None of these 2. 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 3. When the path of electric current is complete, the bulb is _______ ON OFF Both a & b None of these 4. Which of the following is not a form of energy? Light Sound Water Heat 5. Electricity or electric energy is produced by _______ Water Air Generators None of these 6. In heater, the electrical energy changes into _______ Sound Heat light None of these 7. The electricity supplied to our homes through _______ Wi Fi Signals Mechanical energy Wires Signals 8. The path of current is called a/an electric ________. Power Energy Heater circuit 9. When the switch is turned “ON” the path of electric current is _______ Open Complete Infinite None of these 10. How many colors are present in sunlight? 1 3 5 7 11. The temperature of hot objects is _______ than the temperature of cold objects. Smaller Greater Lower None of these 12. Sound is produced by _______ objects. Vacuum Vibrating Electrical None of these 13. _______ helps us to see things. Moon Light Sound None of these 14. Electrical energy can be transformed into: Heat Light Sound All of these 15. In loud speaker, the electrical energy changes into _______ Sound Heat light None of these Time is Up! Time's up
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