Chapter 12 Beyond Earth Class 6 Extra Questions and Answers Science Curiosity

Beyond Earth Class 6 Multiple Choice Questions (MCQs)

1. Which of the following objects shines with its own light?

(a) Planet
(b) Moon
(c) Star ✅
(d) Asteroid

2. The Sun appears larger than other stars because:

(a) It is hotter
(b) It is bigger than all stars
(c) It is closer to the Earth ✅
(d) It reflects more light

3. Groups of stars forming patterns in the sky are called:

(a) Galaxies
(b) Orbits
(c) Constellations ✅
(d) Satellites

4. How many constellations are officially recognised by scientists?

(a) 12
(b) 27
(c) 88 ✅
(d) 100

5. Which constellation contains the Pole Star?

(a) Orion
(b) Ursa Major
(c) Ursa Minor ✅
(d) Canis Major

6. The Pole Star helps us to find:

(a) East direction
(b) West direction
(c) North direction ✅
(d) South direction

7. The Big Dipper is also known as ______ in India.

(a) Dhruva
(b) Saptarishi ✅
(c) Rohini
(d) Krittika

8. Which of the following is the brightest star in the night sky?

(a) Betelgeuse
(b) Pole Star
(c) Sirius ✅
(d) Aldebaran

9. Light pollution is caused due to:

(a) Smoke and dust
(b) Sunlight
(c) Excessive artificial lights at night ✅
(d) Moonlight

10. Which of the following is a planet?

(a) Sirius
(b) Sun
(c) Moon
(d) Earth ✅

11. The unit used to measure distances in the solar system is called:

(a) Light year
(b) Kilometre
(c) Astronomical Unit ✅
(d) Metre

12. Which planet is known as the Morning Star or Evening Star?

(a) Mars
(b) Venus ✅
(c) Jupiter
(d) Mercury

13. Which planet is called the Red Planet?

(a) Mercury
(b) Venus
(c) Earth
(d) Mars ✅

14. Which of the following planets is NOT a gaseous giant?

(a) Jupiter
(b) Saturn
(c) Uranus
(d) Earth ✅

15. Objects that revolve around planets are called:

(a) Asteroids
(b) Stars
(c) Satellites ✅
(d) Comets

16. How long does the Moon take to revolve around the Earth?

(a) 24 hours
(b) 7 days
(c) 27 days ✅
(d) 365 days

17. The region between Mars and Jupiter mainly contains:

(a) Comets
(b) Stars
(c) Asteroids ✅
(d) Satellites

18. Which object develops a tail when it comes close to the Sun?

(a) Asteroid
(b) Planet
(c) Comet ✅
(d) Moon

19. Our solar system is a part of which galaxy?

(a) Andromeda Galaxy
(b) Milky Way Galaxy ✅
(c) Orion Galaxy
(d) Dwarf Galaxy

20. Why do we not see stars during the daytime?

(a) Stars disappear in daylight
(b) Stars stop shining
(c) Sun’s bright light hides them ✅
(d) Earth blocks their light

Beyond Earth Class 6 Fill in the Blanks (Fill ups)

  1. A star is a huge ball of hot gases that shines with its own light.
  2. The star closest to the Earth is the Sun.
  3. Groups of stars that form patterns in the night sky are called constellations.
  4. The total number of officially recognised constellations is 88.
  5. The Pole Star always appears in the north direction.
  6. The Big Dipper is known as Saptarishi in India.
  7. The Pole Star is a part of the constellation Ursa Minor.
  8. The brightest star visible in the night sky is Sirius.
  9. Excessive artificial lighting at night is called light pollution.
  10. An astronomical unit (au) is approximately the distance between the Earth and the Sun.
  11. The Earth takes about 24 hours to complete one rotation.
  12. The Earth takes nearly one year to complete one revolution around the Sun.
  13. Venus is commonly known as the Morning Star and Evening Star.
  14. Mars is called the Red Planet because of its reddish soil.
  15. Objects that revolve around planets are called satellites.
  16. The Moon takes about 27 days to revolve around the Earth.
  17. Small rocky bodies found mainly between Mars and Jupiter are called asteroids.
  18. A comet develops a glowing tail when it comes close to the Sun.
  19. Our Solar System is a part of the Milky Way Galaxy.
  20. A galaxy contains millions to billions of stars.

Beyond Earth Class 6 True or False

  1. Stars shine with their own light. [ TRUE ]
  2. The Sun is a planet. [ FALSE ]
  3. The Sun is the closest star to the Earth. [ TRUE ]
  4. Constellations are groups of stars forming patterns in the sky. [ TRUE ]
  5. There are 12 officially recognised constellations. [ FALSE ]
  6. The Pole Star helps in finding the north direction. [ TRUE ]
  7. The Pole Star is part of the constellation Ursa Major. [ FALSE ]
  8. The Big Dipper is known as Saptarishi in India. [ TRUE ]
  9. Sirius is the brightest star in the night sky. [ TRUE ]
  10. Light pollution helps us see more stars clearly. [ FALSE ]
  11. An astronomical unit is used to measure distances within the solar system. [ TRUE ]
  12. The Earth takes 24 hours to complete one revolution around the Sun. [ FALSE ]
  13. Venus is called the Morning Star and Evening Star. [ TRUE ]
  14. Mars is known as the Blue Planet. [ FALSE ]
  15. Jupiter, Saturn, Uranus and Neptune are gaseous planets. [ TRUE ]
  16. The Moon is Earth’s natural satellite. [ TRUE ]
  17. The Moon takes about 27 days to revolve around the Earth. [ TRUE ]
  18. Asteroids are mostly found between Mars and Jupiter. [ TRUE ]
  19. Comets develop a tail when they come close to the Sun. [ TRUE ]
  20. Our Solar System is a part of the Milky Way Galaxy. [ TRUE ]

Beyond Earth Class 6 Extra Question Answers

Q1. What is a star?
Ans: A star is a huge ball of hot gases that shines with its own light.

Q2. Which star is closest to the Earth?
Ans: The Sun.

Q3. Name the brightest star in the night sky.
Ans: Sirius.

Q4. What are patterns of stars called?
Ans: Constellations.

Q5. How many constellations are officially recognised?
Ans: 88 constellations.

Q6. Which star appears stationary in the sky?
Ans: The Pole Star.

Q7. In which direction does the Pole Star lie?
Ans: North direction.

Q8. What is the Big Dipper called in India?
Ans: Saptarishi.

Q9. What is light pollution?
Ans: Excessive artificial light at night is called light pollution.

Q10. What is a planet?
Ans: A planet is a large object that revolves around the Sun.

Q11. Name the unit used to measure distances in the solar system.
Ans: Astronomical Unit (au).

Q12. How long does Earth take to revolve around the Sun?
Ans: About one year.

Q13. Name Earth’s natural satellite.
Ans: The Moon.

Q14. What are asteroids?
Ans: Small rocky objects that revolve around the Sun.

Q15. What is our home galaxy called?
Ans: Milky Way Galaxy.

Q16. What is a constellation?
Ans: A constellation is a group of stars that appear to form a pattern in the night sky. These patterns were named after animals, objects, or characters to help identify stars easily.

Q17. Why were constellations useful in ancient times?
Ans: In ancient times, constellations helped travellers and sailors find directions at night. They were especially useful before the invention of the magnetic compass.

Q18. Why do stars twinkle but planets do not?
Ans: Stars twinkle because they are very far away and their light passes through Earth’s atmosphere. Planets are closer and appear as steady objects, so they do not twinkle. 

Q19. What is light pollution and how does it affect sky watching?
Ans: Light pollution is caused by excessive artificial lights at night. It makes the sky bright and reduces our ability to see stars and constellations clearly.

Q20. Why does the Sun appear bigger than other stars?
Ans: The Sun appears bigger because it is much closer to the Earth than other stars, even though many stars are actually larger than the Sun.

Q21. What is an astronomical unit (au)?
Ans: An astronomical unit is the average distance between the Earth and the Sun. It is used to measure distances within the solar system.

Q22. Why is Venus called the Morning Star and Evening Star?
Ans: Venus appears very bright and is seen either before sunrise or after sunset. Hence, it is called the Morning Star or Evening Star.

Q23. What is a satellite? Give one example.
Ans: A satellite is an object that moves around a planet. The Moon is a natural satellite of the Earth.

Q24. Mention two features of the Moon.
Ans: Two features of moon are following :-

  1. The Moon has no atmosphere.
  2. Its surface has many craters formed by impacts.

Q25. What is the Milky Way Galaxy?
Ans: The Milky Way Galaxy is our home galaxy which contains millions of stars, including our solar system.

Q26. Explain stars and constellations.

Ans: Stars are huge balls of hot gases that produce their own light and heat. At night, we can see many stars in the sky, some bright and some dim.
Groups of stars form patterns called constellations. These patterns resemble animals, objects, or characters from stories.
In ancient times, constellations helped people identify stars and find directions during travel. Today, the sky is divided into 88 officially recognised constellations.

Q27. How can you locate the Pole Star using the Big Dipper?

Ans: First, locate the Big Dipper in the northern sky.
Identify the two stars at the outer edge of the cup of the Big Dipper.
Imagine a straight line passing through these two stars towards the north.
At about five times the distance between the two stars, this line leads to the Pole Star, which helps locate the north direction.

Q28. Describe the Sun and its importance to Earth.

Ans: The Sun is a star and the closest star to the Earth. It is a huge ball of hot gases that produces heat and light.
The Sun is the main source of energy for Earth. It provides heat, light, and energy necessary for life.
Sunlight helps plants make food and supports the climate, weather, and water cycle on Earth.

Q29. Explain the Solar System.

Ans: The Solar System consists of the Sun, eight planets, their moons, asteroids, and comets.
The Sun is at the centre, and all planets revolve around it.
The eight planets in order are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
The Solar System is part of the Milky Way Galaxy.

Q30. Describe the Moon.

Ans: The Moon is Earth’s natural satellite. It revolves around the Earth in about 27 days.
The Moon is about one-fourth the size of the Earth and has no atmosphere.
Its surface has many craters formed due to the impact of asteroids.
Because there is no atmosphere, these craters remain unchanged for a long time.

Q31. What are asteroids and comets? Write one difference.

Ans: Asteroids are small rocky objects that revolve around the Sun, mostly found between Mars and Jupiter.
Comets are icy bodies with dust and gases that develop a glowing tail when they come close to the Sun.

Difference:
Asteroids do not have tails, while comets have long tails when near the Sun.

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