Page 18 - Fizzy Science Corner

Mercury and Venus
72. Who was the first to determine that the day on the Mars was, like ours, roughly twenty-four hours
long?
Giordano Bruno
73. How long does a Sun ray take to travel from the Sun to the Earth?
500 seconds
74. Which of the following statements in regard to the planets of the Solar System is not correct?
All the planets move round the Sun from West to East
75. Titan is the natural satellite of the planet–
Saturn

76. What is the distance which the Earth covers in its one complete revolution around the Sun?
9.4 × 108 km
77. Which of the following planets is the biggest?
Jupiter
79. Which of the following planets is farthest from the Sun?
Neptune
80. What percentage of the irregular surface of the Earth is covered with water?
70 percent
81. The first planet to be discovered with a telescope was–
Uranus
82. Which of the following types of motion of the Earth has not produced any ‘observable effect for
centuries?
Its motion in space along with the Sun and other members of the Solar System
83. Which of the following is the group of terrestrial planets?
Mercury, Venus, Earth, Mars
84. Which of the following planets has almost the same mass, size and density as the Earth? (A) Venus
(B) Mars (C) Saturn (D) Uranus Answer: Venus