Science Activity 7th Science 1st term 2013-14

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Across
  1. 2. chemical spread over water to prevent evaporation of water.
  2. 4. A band of 7 colours obtain from sunlight passing through prism
  3. 6. container which made of plastic and shiny metal to keep the food hot
  4. 7. a day observe on 22nd March
  5. 8. technique of storing flowing water and conservation of soil
  6. 9. largest resource on earth
Down
  1. 1. animal or bird that disappear from the nature's chain
  2. 2. type or mode of heat transfer which always flow upwards
  3. 3. a day observe on20th Augst
  4. 5. fainter shadow