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Why does this happen ? The wall of a dam...

Why does this happen ? The wall of a dam is broad at its base.

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Water and air both come out of the balloons. Air escapes quickly compared to water and produces a loud sound.
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NAVNEET PUBLICATION-FORCE AND PRESSURE-QUESTION BANK
  1. Write the short note on the pressure due to a liquid (a liquid in gene...

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  2. Why is the wall of a dam made stronger and thicker at the base than at...

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  3. Why does this happen ? The wall of a dam is broad at its base.

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  4. Give two examples to show that air exerts equal pressure in all direct...

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  5. What is a fluid ? Give two examples.

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  6. Take two rubber balloons. Fill one with water and blow air into the ot...

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  7. State the characteristics of the pressure due to a liquid (or a fluid ...

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  8. Write a short note on pressure exerted by a fluid.

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  9. Take an empty can. Pour small quantity of water in it. Boil this water...

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  10. What atmospheric pressure ?

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  11. State the relation between 1 atmosphere and the pascal.

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  12. Why some people feel their ears popping at the top of a mountain.

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  13. Why some people feel breathless as they climb higher and higher on a m...

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  14. We can enjoy a cold-drink or fruit juice with the help of a straw but ...

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  15. People are often advised not to carry fountain pens while travelling b...

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  16. Why do some people have earache when they travel by an aeroplane ?

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  17. Explain why a person may bleed from the nose when at a great height ab...

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  18. How much pressure do we carry on our heads ? Why don't we feel it ?

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  19. When a rubber sucker is pressed onto a flat glass surface, it sticks t...

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  20. Describe a simple experiment to demonstrate atmospheric pressure.

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