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Discuss what makes the head of the comet...

Discuss what makes the head of the comet glow?

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When a comet reaches the part of the orbit that is closer to the Sun, ice, condensed gases and dust particles heat up due to the heat of the Sun, vaporise and make the head of the comet glow.
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  1. Discuss what makes the head of the comet glow?

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  2. Which of the following is a disadvantage of an artificial satellite?

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  3. Which phase of the moon appears after the waxing gibbous phase?

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  4. Which of these was the first satellite launched into the orbit of the ...

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  5. What element is primarily present in the meteorite found in Namibia?

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  6. Why meteoroids traveling close to the Earth get attracted towards it?

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  7. When a burnt meteoroid falls on the Earth's surface, it is called .

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  8. Which is the largest meteorite discovered on the Earth's surface?

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  9. Where is the asteroid belt located?

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  10. Which is the other name of Ceres?

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  11. Which comet is visible from Earth?

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  12. What is the shape of orbits of comets?

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  13. Which planet has a moon called the Titan?

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  14. Which planet is also known as 'evening star'?

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  15. Which gas is present in the greatest quantity in the Sun?

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  16. What is the largest object in our solar system?

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  17. Which of the following is not a planet ?

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  18. What are the outer planets composed of?

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  19. Which constellation is popularly known as 'Saptarshi Mandal' in India?

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  20. What is the other name for 'Orion' Constellation ?

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  21. Which constellation is made of seven stars out of which one is Polaris...

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