Gravitation Worksheet-1

Gravitation Worksheet-1

 

  1. The acceleration due to gravity on the moon is about …………. of that on the earth.

 

  1. In order that the force of gravitation between two bodies may become noticeable and cause motion, one of the bodies must have an extremely large.......................

 

  1. The weight of an object on the earth is about.............. of its weight on the moon.

 

  1. The weight of an object on the moon is about.....................of its weight on the earth.

 

  1. The value of g on the earth is about...............of that on the moon.

 

  1. If the weight of a body is 6 N on the moon, it will be about................on the earth.

 

  1. Force acting on a unit area is called………….

 

  1. It is the ……………… force which makes objects appear lighter in water.

 

  1. A heavy ship floats in water because its ………… density is less than that of water.

 

  1. In fluids (liquids and gases), pressure acts in ………….. directions, and pressure…………..as the depth increases.

 

  1. In order to sink in a fluid, the density of an object must be ……………. than the ………… of the fluid.

 

  1. Snow shoes work by spreading out a person’s ………… over a much bigger ……………

 

  1. If the area of a snow shoe is five times ……… than the area of an ordinary shoe, then the pressure of a snow shoe on the snow is five times………..

 

Answer:

  1. One-sixth

  2. Mass

  3. Six times

  4. One-sixth

  5. Six times

  6. 36 N

  7. Pressure

  8. Buoyant

  9. Average

  10. All ; increases

  11. Less ; density

  12. Weight ; area

  13. Bigger ; smaller