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Explain why , it might be dangerous to r...

Explain why , it might be dangerous to raise an umbrella over head in a thunderstorm.

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### Step-by-Step Solution: 1. **Understanding the Composition of an Umbrella**: - An umbrella is typically made of a fabric canopy supported by a frame, which includes metallic rods. These metallic rods are usually made of materials like aluminum or steel. 2. **Properties of Metallic Rods**: - Metallic rods are excellent conductors of electricity. This means they can easily allow electric charges to flow through them. ...
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LAKHMIR SINGH & MANJIT KAUR-SOME NATURAL PHENOMEAN-EXERCISE
  1. What happens when two moving plates of earth's crust collide head on w...

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  2. 100001 is a prime number or not ?

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  3. Explain why , it might be dangerous to raise an umbrella over head in ...

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  4. A person is in open space during a thunderstorm with no shelter (not e...

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  5. Suggest three measures to protect ourselves from lightning.

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  6. Where is the upper end of the lightning conductor fixd in a building ?

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  7. Where is the lower end of the lightning conductor fixd and how ?

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  8. What precautions would you take to protect yourself during an earthqua...

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  9. What precautions would you take to protect yourself during an earthqua...

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  10. State any two precuations which should be observed by people living in...

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  11. What is an electroscope?

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  12. What is lightning ?

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  13. Why does lightning usually strike tall buildings ?

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  14. Why Does Lightning Strike ?

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  15. A pipe can fill a tank in 12 minutes. Another pipe can empty a tank in...

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  16. Name the scientist who invented the lightning conductor.

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  17. Why are lightning strike more frequent in hilly areas ?

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  18. What is an earthquake ?

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  19. What are two main situations in which earthquakes occur ?

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  20. Define focus, of an earthquake.

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