Science

123456789101112131415161718192021
Across
  1. 2. unpleasant sounds
  2. 3. Fourth step in agricultural practices
  3. 5. sound is produced by ___________
  4. 7. an example for fertilizers
  5. 11. providing proper food, shelter and care to animals on a large scale
  6. 13. Medicines that kill or stop the growth of microorganisms
  7. 14. Muscular force is an example of _______ force
  8. 16. Foot and Mouth disease is a _____
  9. 17. Lactobacillus helps in the formation of ____
  10. 18. __________ gives off heat, light and sound
  11. 19. Dysentry is caused by a _________
  12. 20. Cotton is a _______ crop
  13. 21. Combustible substances are also called ____
Down
  1. 1. __________ opposes the relative motion between two surfaces in contact
  2. 4. sound cannot travel in ________
  3. 6. force has ____________ as well as direction (pg:142 3rd point)
  4. 8. liquids exert pressure on the _____ of the container
  5. 9. incomplete combustion of fuels gives __________ gas
  6. 10. _____crops are grown in winter season
  7. 12. Robert Koch discovered ________
  8. 15. Big clumps of soil that need to be broken
  9. 18. who discovered the vaccine for smallpox in 1798?