1. _____it is a point in the body where the weight of the body appears to act vertically downward.

2. ____ force is that force that keeps a body to move in a circle.

3. if an object moves along a circular path, its motion is called ____.

4. A collection of two or more objects is called a ____.

6. the increase in Volume of a body on heating is called ____?

7. coal ,oil and natural gas are termed as ___.

8. ___ it deals with the study of internal Earth.

9. ___ is anything which has mass and takes up space.

10. _____ the applied force that brings a change in length , volume or shape of body.

11. the negative acceleration is called____.

12. a quantity which is completely specified by its magnitude is called the ____ Quantity.

13. two unlike parallel forces of the same magnitude but not along the same line is called ___.

14. the unit of base quantity is known as?

15. the ratio of stress and strain is called_____.

16. if the stress can produce a Change in volume of a body its called ____?

17. a quantity which can ve derived from base quantities is known as___.

18. A line about which all particles of a rigid body rotates is called ____.

19. ____its an instrument used to measure atmospheric pressure.

20. the force between two sliding objects that opposes their relative motion is called____.