Across
- 4. Solar energy, hydropower energy and biomass are sources of __________ energy.
- 7. __________ fuel and coal are non-renewable sources of energy.
- 8. Energy is the ____________ to do work
- 10. S.I. unit for force
- 12. S.I. unit for mass
- 15. Water, being a neutral solution has a pH value of ___________
- 16. Ice floats on water because its ________ is less than that of water.
- 17. Energy cannot be __________ or destroyed
- 18. The energy that an object has due to its temperature
- 19. The ____________ strip is made of two different metals which expand at different rates when heated.
Down
- 1. S.I unit for energy
- 2. Alkalis turn red litmus paper __________
- 3. Type of potential energy stored in objects which are stretched or compressed
- 4. A suspension will leave behind a __________ on the filter paper during filtration.
- 5. Mercury __________ in water as its density is more that that of water.
- 6. Material A can scratch material B because A is __________ than B.
- 9. Alkalis have __________ taste.
- 11. The required energy used to charge a mobile device.
- 13. Acids turn blue litmus paper __________
- 14. Acids have __________ taste.
- 17. A solution looks __________ whereas a suspension looks cloudy.