Science

3. Force exerted by a charged body on another charged or uncharged body
5. This friction can be minimised by giving suitable shapes to bodies moving in fluids
6. These are found only in a particular area
9. It contains a record of endangered species
12. Frictional force exerted by fluids is also called
14. It is caused by the irregularities on the two surfaces in contact
15. Force per unit area
19. It is the phenomenon of movement of a species from its own habitat to some other habitat for a particular time period
20. It is produced by vibrating objects
21. He discovered fermentation in 1857
22. They cause serious diseases like dysentery and malaria
24. Pressure exerted by air around us
25. Force resulting due to the action of muscles
26. This friction comes into play when we try to move an object at rest
27. Process of conversion of sugar into alcohol

1. Strength of a force is usually expressed by its
2. Sound cannot travel in this
4. It could be a push or a pull
6. These species are those which are facing the danger of extinction
7. Substances which burn in air
8. Unpleasant sounds
10. Number of oscillations or vibrations per second
11. He discovered the vaccine for small pox
13. They are too small and are not visible to the unaided eye
16. When one body rolls over the surface of another body, the resistance to its motion is called
17. It refers to the variety of living organisms in a specific area
18. It is the restocking of destroyed forests by planting new trees
23. In human beings, the vibration of these produces sound