Stars and the Solar System Part 1: MCQs (Q1–Q25)
🌌 Stars and the Solar System – MCQs for Class 8 Science
Part 1: Q1–Q25
Q1. The celestial body that revolves around a planet is called:
A) Star
B) Asteroid
C) Satellite
D) Comet
✅ Correct Answer: C) Satellite
Explanation:
- C) ✔ Satellites revolve around planets.
- A) Stars emit their own light.
- B) Asteroids orbit the Sun, not planets.
- D) Comets orbit the Sun in elongated paths.
Q2. The planet known as the “Red Planet” is:
A) Venus
B) Mars
C) Jupiter
D) Saturn
✅ Correct Answer: B) Mars
Explanation:
- B) ✔ Mars appears red due to iron oxide on its surface.
- A) Venus looks yellowish-white.
- C, D) Jupiter and Saturn are gas giants, not red.
Q3. Which is the brightest planet visible from Earth?
A) Venus
B) Mars
C) Saturn
D) Mercury
✅ Correct Answer: A) Venus
Explanation:
- A) ✔ Venus is called the “Morning Star” or “Evening Star.”
- B) Mars is red but not as bright.
- C, D) Saturn and Mercury are less bright than Venus.
Q4. The nearest star to Earth (other than the Sun) is:
A) Sirius
B) Alpha Centauri
C) Polaris
D) Betelgeuse
✅ Correct Answer: B) Alpha Centauri
Explanation:
- B) ✔ Proxima Centauri (part of Alpha Centauri system) is the closest star.
- A) Sirius is bright but farther.
- C, D) Polaris and Betelgeuse are much farther away.
Q5. The pole star is located almost directly above:
A) South Pole
B) Equator
C) North Pole
D) Tropic of Cancer
✅ Correct Answer: C) North Pole
Explanation:
- C) ✔ Polaris helps in navigation because it is above the North Pole.
Q6. Which planet is known as the “Earth’s twin”?
A) Venus
B) Mars
C) Saturn
D) Mercury
✅ Correct Answer: A) Venus
Explanation:
- A) ✔ Venus is similar in size and mass to Earth.
- B) Mars is smaller.
- C, D) Gas giants and Mercury are very different from Earth.
Q7. The largest planet in our solar system is:
A) Saturn
B) Jupiter
C) Neptune
D) Earth
✅ Correct Answer: B) Jupiter
Explanation:
- B) ✔ Jupiter is the biggest planet in size and mass.
Q8. The smallest planet in the solar system is:
A) Mercury
B) Mars
C) Venus
D) Pluto
✅ Correct Answer: A) Mercury
Explanation:
- A) ✔ Mercury is the smallest planet.
- D) Pluto is a dwarf planet, no longer in the main planet list.
Q9. The natural satellite of Earth is:
A) Phobos
B) Titan
C) Moon
D) Europa
✅ Correct Answer: C) Moon
Explanation:
- C) ✔ Moon is Earth’s only natural satellite.
Q10. The planet with a system of rings around it is:
A) Mars
B) Venus
C) Saturn
D) Jupiter
✅ Correct Answer: C) Saturn
Explanation:
- C) ✔ Saturn is famous for its bright ring system.
- D) Jupiter has faint rings, not as prominent.
Q11. The Milky Way is a:
A) Galaxy
B) Solar System
C) Constellation
D) Star
✅ Correct Answer: A) Galaxy
Explanation:
- A) ✔ Our galaxy is called the Milky Way.
Q12. The planet farthest from the Sun is:
A) Saturn
B) Neptune
C) Uranus
D) Pluto
✅ Correct Answer: B) Neptune
Explanation:
- B) ✔ Neptune is the 8th and farthest planet.
Q13. The time taken by Earth to complete one rotation is:
A) 365 days
B) 24 hours
C) 30 days
D) 12 hours
✅ Correct Answer: B) 24 hours
Explanation:
- B) ✔ One rotation = 24 hours = one day-night cycle.
Q14. Which of the following is NOT a planet?
A) Neptune
B) Pluto
C) Saturn
D) Earth
✅ Correct Answer: B) Pluto
Explanation:
- B) ✔ Pluto is now classified as a dwarf planet.
Q15. Which planet is known as the “Morning Star”?
A) Venus
B) Mars
C) Mercury
D) Jupiter
✅ Correct Answer: A) Venus
Explanation:
- A) ✔ Venus is visible before sunrise and after sunset.
Q16. The Sun appears larger than other stars because:
A) It is the hottest star
B) It is closest to Earth
C) It is the brightest star in the universe
D) It is the largest star
✅ Correct Answer: B) It is closest to Earth
Explanation:
- B) ✔ Sun is an average star but appears big because it is nearby.
Q17. The first artificial satellite launched by India was:
A) INSAT-1A
B) Aryabhata
C) Bhaskara
D) Rohini
✅ Correct Answer: B) Aryabhata
Explanation:
- B) ✔ Launched in 1975, India’s first satellite was Aryabhata.
Q18. A group of stars that form a recognizable pattern is called:
A) Galaxy
B) Constellation
C) Solar System
D) Cluster
✅ Correct Answer: B) Constellation
Explanation:
- B) ✔ Examples: Orion, Ursa Major.
Q19. Which planet is tilted on its side and rotates lying almost horizontally?
A) Uranus
B) Neptune
C) Saturn
D) Jupiter
✅ Correct Answer: A) Uranus
Explanation:
- A) ✔ Uranus has a tilt of about 98°.
Q20. Which planet is known as the “Blue Planet”?
A) Neptune
B) Earth
C) Uranus
D) Saturn
✅ Correct Answer: B) Earth
Explanation:
- B) ✔ Earth looks blue from space due to water.
Q21. The Sun is a:
A) Planet
B) Star
C) Galaxy
D) Comet
✅ Correct Answer: B) Star
Explanation:
- B) ✔ Sun is a star made of hot gases.
Q22. Which of these is not a planet of our solar system?
A) Venus
B) Mars
C) Pluto
D) Sirius
✅ Correct Answer: D) Sirius
Explanation:
- D) ✔ Sirius is a star, not a planet.
Q23. The first Indian satellite launched from Indian soil was:
A) Aryabhata
B) Bhaskara I
C) Rohini RS-1
D) INSAT-2A
✅ Correct Answer: C) Rohini RS-1
Explanation:
- C) ✔ Rohini was launched from Indian SLV-3 in 1980.
Q24. The outermost layer of the Sun visible during an eclipse is:
A) Corona
B) Photosphere
C) Chromosphere
D) Core
✅ Correct Answer: A) Corona
Explanation:
- A) ✔ Corona appears as a halo during solar eclipse.
Q25. Which constellation is known as the “Hunter”?
A) Ursa Major
B) Orion
C) Cassiopeia
D) Leo
✅ Correct Answer: B) Orion
Explanation:
- B) ✔ Orion resembles a hunter holding a bow.
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