Exercise, 8th Sci., 19. Life Cycle of Stars

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आपल्या विज्ञान विषयाच्या माहितीसाठी खालील 👇 लिंकला 🖇️ स्पर्श करा.

            

                  माहिती विज्ञानाची 🎷

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• धड्यातील छोट्या छोट्या घटकांचा विचार करून स्वाध्याय तयार केला तर धड्याची संपूर्ण तयारी छान होते. यालाच आपण सूक्ष्मा कडून अनंताकडे असे म्हणू.
• स्वाध्याय रिकाम्या जागा या स्वरूपातच का? घेत आहोत तर त्या वाक्यासाठी योग्य शब्द म्हणजे रिकामी जागा. 
• पर्याय का देत नाही, पर्याय दिल्यास त्या चार पर्यायांपैकी एक उत्तर असणार आहे. म्हणजेच आपल्याला फक्त त्या चार शब्दांचाच विचार करायचा असतो.

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1. The masses of other stars are measured with respect to the mass of the ... .

2. The different stages during the evolution of the star which is the path of evolution of the star, also depends on its mass.

3. What is a satellite?

4. A light year is the distance travelled by light in ... year.

5. A spoonful of white dwarf material weighs several... 

6. With our unaided eyes, we can see roughly... stars at night.

7. Explain black holes.

8. The Sun's mass is roughly ... lakh times that of the Earth.

9. Describe a galaxy.

10. Scientists use the unit of ... year for measuring large distances.

11. Our galaxy contains roughly ... stars.

12. The weight of all living things on Earth is equal to one spoonful of material derived from ... stars.

13. List the three different kinds of galaxies.

14. According to the studies made by astromomers, sun properties will slowly change in further after ... billion years.

15. Our sun's surface temperature is... K.

16. Stars are born out of ... clouds.

17. What components make up our solar system?

18. Shape of our galaxy is like a disc with a bulge in the center, and its diameter is about ... km.

19. As the speed of light is ... km/s, the light year is equal to 9.5 x 1012 km.

20. The traditional Indian name for our spiral galaxy, the Milky Way, is....

21. Our Sun weighs ... kg.

22. In the Sun, energy is generated by the fusion of ... nuclei to form helium nuclei.

23. For measuring large distances... is used as a unit.

24. The sun is ... years old.

25. Which star is nearest to us?

26. The radius of sun is 100 times that of the earth.

27. The larger the mass of a star, the faster is its...

28. It takes 4.2 years to reach light from the star alpha Centauri which is the star closest to the Sun.

29. Our Sun's radius is ... km.

30. How do a star and a planet differ from one another?

31. Our galaxy's rotation period is approximately ... years.

32. Stars are spheres of ... gas.

33. Astronomers study the observations made by all these ... to obtain detailed information about the universe.

34. The sun's center has a temperature of... K.

35. The solar system is located ... kilometers away from the center of our galaxy.

36. The Sun's mass is composed of 72% hydrogen and 26% helium.

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काही शब्दांना गुगल लिंक 🖇️ आहे. 

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लाल शब्द हे पुस्तकातील चुका🙏 दर्शवतात.

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माफ करा काही मोजकेच प्रश्न दोन वेळेस विचारले आहेत.

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आपल्या आयुष्याचा सर्वात सुंदर भाग आपण स्वतः असतो..!!♡❤♡"

Live Life 🧬, Be happy 😁 and have fun 🥳..!!