Force, Work and Energy
Q.1. Name some objects moving on the road.
Q.2. How does a rickshaw, a train and a cart move?
Q.3. What is a force?
Q.4. What can a force do?
Q.5. Give an incident where force makes an object move.
Q.6. Give an incident where force stops a moving object?
Q.7. Give an incident where force increases the speed of a moving body?
Q.8. What is work?
Q.9. What is energy?
Q.10. What is muscular energy?
Q.11. What is the main source of heat?
Q.12. Name some fuels?
Q.13. Which fuel is used for the automobiles to run?
Q.14. What is fuel energy?
Q.15. What are the uses of wind energy?
Q.16. How can water be used to produce electricity?
Q.17. What is chemical energy produced by our body?
Q.18. Name some appliances which work with the help of electricity?
Q.19. What is the use of light energy?
Q.20. Give one use of a magnet?
Q.21. What is magnetic energy?
Q.22. What is elastic energy?
Q.23. Name some appliances in which electrical energy is converted to heat energy?
Q.24. Name some instruments in which electrical energy is converted to light energy?
Q.25. Name some machines in which electrical energy is converted to mechanical energy?
Q.26. Name some instruments in which electrical energy is converted to sound energy?
Q.27. Name some sources of energy?
Q.28. What is the effect of population on energy?
Q.29. Name some alternate ways and means to increase the supply of energy?
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