Geography : Chapter 1- The Earth in the Solar System.

Class 6: Geography 

The Earth in the Solar System

50 Important Facts

1. The Solar System consists of the Sun, eight planets, satellites, asteroids, comets, and meteoroids.

2. The Sun is at the centre of the Solar System.

3. The Sun is a huge ball of hot gases.

4. The Sun provides heat and light to all planets.

5. Without the Sun, life on Earth would not be possible.

6. The planets move around the Sun in fixed paths called orbits.

7. There are eight planets in the Solar System.

8. The planets do not have their own light.

9. They shine by reflecting the light of the Sun.

10. Mercury is the closest planet to the Sun.

11. Venus is the hottest planet.

12. Earth is the third planet from the Sun.

13. Earth is the only known planet with life.

14. Earth has air, water, and suitable temperature for life.

15. Mars is known as the Red Planet.

16. Jupiter is the largest planet in the Solar System.

17. Saturn has beautiful rings around it.

18. Uranus rotates on its side.

19. Neptune is the farthest planet from the Sun.

20. The Earth takes 365¼ days to go around the Sun.

21. This movement of Earth is called revolution.

22. Earth also spins on its axis.

23. This spinning is called rotation.

24. Earth takes 24 hours to complete one rotation.

25. Rotation causes day and night.

26. Revolution causes change of seasons.

27. The Moon is Earth’s natural satellite.

28. The Moon takes about 27 days to revolve around the Earth.

29. The Moon does not have its own light.

30. Stars are very big and hot celestial bodies.

31. Stars twinkle because they are very far from the Earth.

32. The Sun is also a star.

33. A group of stars forming a pattern is called a constellation.

34. Saptarishi is a famous constellation.

35. The Pole Star shows the north direction.

36. Asteroids are found between Mars and Jupiter.

37. Asteroids are also called minor planets.

38. Meteors are small pieces of rock moving in space.

39. A meteor that reaches the Earth is called a meteorite.

40. Comets move around the Sun in long elliptical paths.

41. Comets appear with a bright head and a long tail.

42. The tail of a comet always points away from the Sun.

43. The universe is very large and endless.

44. Galaxies are huge systems of stars.

45. Our galaxy is called the Milky Way.

46. Earth is slightly flattened at the poles.

47. Earth is also called the Blue Planet.

48. About 71% of Earth is covered with water.

49. The shape of Earth is called geoid.

50. The Solar System is a small part of the vast universe. 

Questions & Answers 

1. What is the Solar System?

The Solar System is a family of the Sun, planets, satellites, asteroids, comets, and meteoroids.

2. Who is the centre of the Solar System?

The Sun is the centre of the Solar System.

3. What is the Sun made of?

The Sun is made of hot gases.

4. Why is the Sun important for Earth?

The Sun provides heat and light necessary for life.

5. How many planets are there in the Solar System?

There are eight planets.

6. Name the closest planet to the Sun.

Mercury is the closest planet to the Sun.

7. Which planet is the hottest?

Venus is the hottest planet.

8. Which planet is known as the Blue Planet?

Earth is known as the Blue Planet.

9. Why is Earth called the Blue Planet?

Because most of its surface is covered with water.

10. Which planet supports life?

Earth supports life.

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11. Which planet is called the Red Planet?

Mars is called the Red Planet.

12. Which is the largest planet?

Jupiter is the largest planet.

13. Which planet has rings around it?

Saturn has rings around it.

14. Which planet rotates on its side?

Uranus rotates on its side.

15. Which is the farthest planet from the Sun?

Neptune is the farthest planet.

16. What is an orbit?

An orbit is the fixed path of a planet around the Sun.

17. Do planets have their own light?

No, planets do not have their own light.

18. How do planets shine?

They shine by reflecting sunlight.

19. What is rotation?

Rotation is the spinning of the Earth on its axis.

20. How long does Earth take to rotate once?

Earth takes 24 hours to rotate once.

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21. What is revolution?

Revolution is the movement of the Earth around the Sun.

22. How long does Earth take to revolve around the Sun?

Earth takes 365¼ days.

23. What causes day and night?

Rotation of the Earth causes day and night.

24. What causes seasons?

Revolution of the Earth causes seasons.

25. What is the Moon?

The Moon is the natural satellite of the Earth.

26. Does the Moon have its own light?

No, the Moon does not have its own light.

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

About 27 days.

28. What are stars?

Stars are huge balls of hot gases that give out heat and light.

29. Why do stars twinkle?

Because they are very far from the Earth.

30. Is the Sun a star?

Yes, the Sun is a star.

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31. What is a constellation?

A group of stars forming a pattern is called a constellation.

32. Name a famous constellation.

Saptarishi is a famous constellation.

33. Which star shows the north direction?

The Pole Star shows the north direction.

34. What are asteroids?

Asteroids are small rocky bodies that revolve around the Sun.

35. Where are asteroids found?

Between Mars and Jupiter.

36. What are meteors?

Meteors are small pieces of rock moving in space.

37. What is a meteorite?

A meteor that reaches the Earth is called a meteorite.

38. What are comets?

Comets are celestial bodies with long tails.

39. In what path do comets move?

Comets move in long elliptical paths.

40. Which way does a comet’s tail point?

Away from the Sun.

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41. What is the universe?

The universe includes everything that exists in space.

42. What is a galaxy?

A galaxy is a huge system of stars.

43. Name our galaxy.

The Milky Way.

44. What is the shape of the Earth?

Earth is geoid in shape.

45. Why is Earth flattened at the poles?

Due to its rotation.

46. How much of Earth is covered with water?

About 71%.

47. What is a satellite?

A body that revolves around a planet is called a satellite.

48. Name Earth’s natural satellite.

The Moon.

49. Why is life possible on Earth?

Because of air, water, and suitable temperature.

50. Is the Solar System a part of the universe?

Yes, the Solar System is a small part of the universe.

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