1st Class Science Air, Water and Weather Weight of Air

Weight of Air

Category : 1st Class

*  Weight of Air

The force, which air is exerting upon us, is called the weight of the air. To understand it we can take the example of a football without air. When we start filling it with air, it gets heavier. Same things happen when the wheels of buses, cars, and cycles are filled with air. Hence we can say that air has weight.

 

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  Weight of air means _________.

(a) Force                                             

(b) Mass

(c) Energy                                           

(d) All of these

 

Answer: (a)

Explanation 

Option (A) is correct because weight means force exerted. Therefore, rest of the options is incorrect. A balloon is filled with air.

 

 

  What change will it make to the weight of the balloon?

(a) Decrease                                     

(b) Increase

(c) No change                                

(d) All of these

 

Answer: (b)

Explanation 

Option (B) is correct because air has weight. So it will increase the weight of balloon- Therefore, rest of the options is incorrect.

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