universe & solar system section 6 MCQ Questions & Answers Detailed Explanation

Question : 1

World Earth Day is celebrated on

a) 7 April

b) 7 March

c) 22 March

d) 22 April

Question : 2

The ‘Sea of Tranquitity’ lies on

a) Jupiter

b) Moon

c) Sun

d) Earth

Question : 3

When the Moon size is half of the full Moon, the angle between the Sun, the Earth and the Moon is

a) 180º

b) 270º

c) 90º

d) 45º

Question : 4

Which of the following is/are cited by the scientists as evidence/evidences for the continued expansion of universe?

1. Detection of microwaves in space.
2. Observation of redshift phenomenon in space.
3. Movement of asteroids in space.
4. Occurrence of supernova explosions in space.

a) 1, 3 and 4

b) None of the above can be cited as evidence

c) 2 only

d) 1 and 2

Question : 5

Which one of the following statements is correct with reference to our solar system?

a) The Sun contains 75 percent of the mass of the solar system.

b) The diameter of the sun is 190 times that of the Earth.

c) The predominant element in the composition of Earth is silicon.

d) The earth is the densest of all the planets in our solar system.

Question : 6

Consider the following statements

1. The Earth does not move along its orbit at a constant rate.
2. The Earth moves fastest at perihelion and slowest at aphelion.

a) Ohm’s law

b) Newton’s law of gravitation

c) Newton’s second law of motion

d) Kepler’s second law