Universe Page-4

31) The visible part of the sun is called
(A) Ionosphere
(B) Hydrosphere
(C) Photosphere
(D) Troposphere

32) "Galileo Satellites", named after their discoverer, are four large moons of the planet
(A) Jupiter
(B) Neptune
(C) Saturn
(D) Uranus

33) How long does a sun-ray take travel from the sun to the earth?
(A) 400 sec
(B) 450 sec
(C) 498 sec
(D) 600 sec

34) A Comet ___
(A) Has a tail always pointing away from the sun
(B) Has a tail always pointing towards the sun
(C) Has a tail, sometimes pointing towards the sun and sometimes away from it
(D) Has no tail at all

35) How many days does the moon take to return to the same position among the constellations?
(A) 28 days
(B) 29 days
(C) 26 days
(D) None of the above

36) Stars which appear single to the naked eye but are double stars when observed by a telescope, are known as:
(A) Cosmic stars
(B) Quasars
(C) Bindaries
(D) Novas and supernovas

37) Sometimes the earth passes exactly between the moon and the sun this condition is known as
(A) Earth eclipse
(B) Lunar eclipse
(C) Solar eclipse
(D) None of these

38) According to new scientific research water is present on the surface of ____ except planet earth
(A) Mars
(B) Venus
(C) Mercury
(D) Jupiter

39) Pole Star is always seen at one point in the sky whereas other stars are not; this is because.
(A) Pole star rotates with the same period as the earth
(B) Pole star is a star of our own galaxy
(C) Sun and Pole star are in two opposite directions relative to earth
(D) Pole star lies in the axis of spin of the earth

40) Twelve constellations referred to as zodiac, are
(A) Signs of Roman gods
(B) Imaginary region that encompass the path of the planets
(C) A group of stars
(D) None of these