Topic outline

  • Chapter 17 – Stars and Solar System – 2

    • Stars and Solar System – Questions Page

      Stars and Solar System

      Q20. Name the largest planet of the solar system.

      Ans. Jupiter is the largest planet of the solar system.

       

      Q21. How large is Jupiter compared to Earth?

      Ans. The mass of Jupiter is about 318 times that of our Earth.

       

      Q22. What is a star?

      Ans. Stars are celestial bodies that emit light of their own.

       

      Q23. How many planets are there in the Solar System?

      Ans. There are eight planets in the solar system.



      Q24. How many prominent stars are present in the Orion constellation?

      Ans. It has seven or eight bright stars.

       

      Q25. How long does it take light to travel from Alpha Centauri to Earth?

      Ans. It takes sunlight 4.3 years to travel from the Sun to the Earth.

       

      Q26. What is Ursa Major also known as?

      Ans. It is also known as the Big Dipper, the Great Bear or the Saptarshi.

       

      Q27. Which is the smallest planet of the solar system?

      Ans. Mercury is the smallest planet of our solar system.

       

      Q28. Which constellation appears to have the shape of a hunter?

      Ans. Orion is the constellation which appears to have the shape of a hunter.

       

      Q29. How many prominent stars are present in the Ursa Major constellation?

      Ans. There are seven prominent stars in the Ursa Major constellation.



      Q30. What is the ultimate source of heat and light for the solar system?

      Ans. Sun is the ultimate source of heat and light for the solar system.

       

      Q31. In which season of the year is the Cassiopeia constellation visible in the night sky?

      Ans. Cassiopeia is visible during winter in the early part of the night.

       

      Q32. Name two objects other than planets which are members of the solar system.

      Ans. Asteroids and Meteors

       

      Q33. Name one constellation which is visible in the sky in the summer season.

      Ans. Ursa Major

       

      Q34. Name two constellations which are visible in the sky in the winter season.

      Ans. Orion and Cassiopeia



      Q35. Which celestial body is seen as a bright streak of light coming down the night sky?

      Ans. Meteor is seen as a bright streak of light coming down the night sky.

       

      Q36. Which constellation appears to have the shape of a big lion?

      Ans. Leo Major is the constellation which appears to have the shape of a big lion.

       

      Q37. How many planets are between Earth and the Sun? Name them.

      Ans. Mercury and Venus are the planets which lie between the Sun and the Earth.

       

      Q38. Which comet was last seen in 1986 after a period of 76 years?

      Ans. Halley’s comet, which appears after nearly every 76 years was last seen in 1986.

       

      Q39. Which planet is known as the red planet and why?

      Ans. Mars is known as the red planet because it appears slightly reddish in colour.



      Q40. What do we call the heavenly bodies in the sky which orbit the planets?

      Ans. The heavenly bodies in the sky which orbit the planets are called satellites.

       

      Q41. Which member of the Solar System appears in the sky like a bright ball of light with a long glowing tail?

      Ans. A Comet appears in the sky like a bright ball of light with a long glowing tail.

       

      Q42. Name the constellation which appears to have the shape of a distorted W or M.

      Ans. Cassiopeia is the constellation which appears to have the shape of a distorted W or M.

       

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