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Explain why heat is produced by the sun....

Explain why heat is produced by the sun.

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Heat is produced by the sun by the nuclear fussion of hydrogen and helium which give off heat. The core of the sun is the region that extends from the center to about 20-25% of the soalr radius. It is here, in the core, where energy is produced by hydrogen atoms (H) being converted into nuclei of helium (He).
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PEARSON IIT JEE FOUNDATION-COMBUSTION AND FLAME -CLASSROOM CORNER Short Answer Type Questions
  1. Which fuel does not burn with a flame? Comment.

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  2. Does magnesium burn with a flame? Explain in your own words.

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  3. Explain why how flame is formed.

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  4. Define incomplete and complete combustion.

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  5. Why is magnesium so flammable? Justify your answer.

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  6. What colour flame is the coolest in a candle?

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  7. How does water poured on a burning log of wood help extinguish the fir...

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  8. Why LPG is stored in liquid form?

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  9. Why are gas bottles formed in the shape of a cylinder?

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  10. Why is liquid stored in cylinders rather than boxes like other cargo?

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  11. Discuss what happens when LPG leaks.

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  12. Why is blue fire considered the hottest?

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  13. What is the coldest fire color in a candle flame?

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  14. Discuss at what temperature does clothes catch on fire.

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  15. Explain why does a matchstick not burn on its own.

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  16. What are the conditions necessary for combustion to take place ?

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  17. How will you show that air is necessary for combustion ?

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  18. Explain why heat is produced by the sun.

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  19. Why are the flames of candles and oil lamps usually used for lighting ...

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  20. Explain why you are asked to stay close to the ground while escaping a...

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