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How do insects run on the surface of wat...

How do insects run on the surface of water?

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Water has a tendency to reduce its surface area. Surface of water behaves like a stretched membrane. So, when insects touch water, it can easily run over it. It can run even with greater speed due to less aggressive force between water and insects.
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PREMIERS PUBLISHERS-PROPERTIES OF MATTER-OTHER IMPORTANT QUESTION & ANSWERS (CONCEPTUAL QUESTIONS)
  1. Out of friction force and viscous force which depends upon velocity.

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  3. Two identical solid balls, one of ivory and the other of wet-clay, are...

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  4. Why aeroplanes and cars have streamline shape?

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  5. How do insects run on the surface of water?

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  6. Why hot water is preferred to cold water for washing clothes?

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  7. Why the blood pressure in humans is greater at the feet than at the br...

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  8. A person standing near a speeding train has a danger of falling toward...

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  9. Why a small bubble rises slowly through a liquid whereas the bigger bu...

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  10. Mercury does not wet the glass. Why?

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  11. A needle floats in clean water, but sinks in soap solution. Why?

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  12. A piece of chalk when immersed in water emits bubbles. Why?

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  13. Small bits of camphor dance about in clear water but not on one contam...

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  14. Oil calms the stormy waves on the sea. Why?

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  15. Why is sand drier than clay?

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  16. Two streamlines cannot cross each other. Why ?

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  17. Why is the tip of the nib of a pen split?

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  18. Why tiny drops of fog act as rigid bodies?

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  19. Small drops of mercury are found to assume a spherical shape. Why?

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  20. Why does a stone sink when placed on the surface of water?

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