Class 8 Exam > Class 8 Notes > Very Short Answers - Stars and the Solar System, Science, Class 8
Very Short Answers - Stars and the Solar System, Science, Class 8 PDF Download
VERY SHORT ANSWER TYPE QUESTIONS
Q. 1. What is sun?
Ans. The sun is a star.
Q. 2. Name the planet nearest to the ‘sun’.
Ans. Mercury.
Q. 3. Name the planet nearest to the earth.
Ans. Mars.
Q. 4. Name the planets opposite side of the earth.
Ans. Mars and Venus.
Q. 5. Name the star which is nearest to the earth.
Ans. Alpha Centaury.
Q. 6. Write the name of any two constellations.
Ans. Great Bear and Orion.
Q. 7. Which planet has rings around it?
Ans. Saturn.
Q. 8. Name the planet farthest from the sun.
Ans. Neptune.
Q. 9. Write the name of astronaut who first landed on the moon.
Ans. Neil Armstrong.
Q . 10. When did Neil Armstrong land on the surface of the moon?
Ans. On July 21, 1969.
Q . 11. What is the speed of light?
Ans. 300000 km per second.
Q . 12. Write other name of constellation Great Bear.
Ans. Saptarishi.
Q . 13. How many bright stars are there in Orion?
Ans. Seven or Eight.
Q . 14. What is the other name of Orion?
Ans. Hunter.
Q . 15. Which is the nearest star to the earth?
Ans. Sun.
Q . 16. Which star is called morning or evening star?
Ans. Venus.
Q . 17. Which colour is seen on earth from space?
Ans. Blue green.
Q . 18. Which planet is called Red planet?
Ans. Mars.
Q . 19. Which is the smallest planet?
Ans. Mercury.
Q . 20. Which planet is yellowish in colour?
Ans. Saturn.
Q . 21. Which planets are called inner planets?
Ans. Mercury, Venus, Earth and Mars.
Q . 22. Which planets are called outer planets?
Ans. Jupiter, Saturn, Uranus and Neptune.
Q . 23. Write the name of artificial satellite.
Ans. INSAT, IRS, Kalpana-I.
Q . 24. What is responsible for the change in season on earth?
Ans. Tilting of earth.
Q . 25. Name the planets which have no moon.
Ans. Mercury and Venus.
Q . 26. Name the planet where life exists.
Ans. Earth.
Q . 27. What is the path on which planets revolve around the sun called?
Ans. Orbit.
Q . 28. How many planets are there in the solar system?
Ans. Eight.
Q . 29. Name the planet where there is no carbon dioxide.
Ans. Mercury.
FAQs on Very Short Answers - Stars and the Solar System, Science, Class 8
| 1. What is a star? |  |
Ans. A star is a massive, luminous ball of plasma held together by its own gravity. It emits light and heat due to the process of nuclear fusion occurring in its core.
| 2. How are stars formed? | |
Ans. Stars are formed from the gravitational collapse of giant molecular clouds of gas and dust. As these clouds collapse, they heat up and spin faster, eventually forming a dense core known as a protostar. The protostar continues to gather mass and eventually reaches a point where nuclear fusion begins, turning it into a main-sequence star.
| 3. What determines the color of a star? | |
Ans. The color of a star depends on its surface temperature. Hotter stars have bluish-white colors, while cooler stars have reddish or orange colors. This is because the temperature affects the amount of energy emitted by the star at different wavelengths, and our eyes perceive this as different colors.
| 4. How does the Sun compare to other stars in the universe? | |
Ans. The Sun is an average-sized star, classified as a yellow dwarf. It is relatively small compared to many other stars in the universe, but it is still larger than most stars in our galaxy. The Sun's size and distance from Earth make it appear much brighter and hotter than other stars, making it crucial for sustaining life on our planet.
| 5. Can stars die? | |
Ans. Yes, stars can die. The ultimate fate of a star depends on its mass. Small stars like our Sun eventually exhaust their nuclear fuel and expand into red giants, shedding their outer layers and leaving behind a dense core called a white dwarf. More massive stars can undergo supernova explosions, leaving behind neutron stars or black holes. The death of a star is an important part of the stellar life cycle.
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