Across
- 3. zone of complete combustion
- 9. unit to measure energy
- 10. this grows in savannah
- 13. evaporation+condensation = pure water
- 14. splitting up of white light into seven constituent colours
- 15. tyre of a moving vehicle becomes hot due to
- 16. this should not be used for oil fire
- 17. solid water
- 19. top carnivore in a grassland food chain
- 20. incomplete combustion produces this gas
- 21. measures temperature
- 24. water exists in abundance on this planet
Down
- 1. rocks which contain water
- 2. organisms which feed upon dead matter to get energy and give back the nutrients to the soil
- 4. gaseous fuel
- 5. rise in the temperature of earth
- 6. process of converting saline water into fresh water
- 7. amount of heat liberated whenn 1 kg of fuel is burt completely
- 8. process by which sun produces energy
- 11. purest form of water
- 12. rain with oxides of sulphur and nitrogen dissolved in water
- 15. a network of interlinked food chains
- 18. sahara is an example for this biome
- 22. this energy can be felt and not seen
- 23. herbs, lichens, reindeers, owls and foxes are found in this biome