VarunShah_Science_7th Std

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Across
  1. 2. shines in dark
  2. 6. Major component of Gober gas
  3. 7. Hardest element present on earth
  4. 9. Father of modern science
  5. 10. Hardest element in periodic table
Down
  1. 1. Long sightedness
  2. 3. Sound travels faster in this medium
  3. 4. Also used as a bio-fertilizer
  4. 5. Unit of frequency
  5. 8. Measurement of sound