universe & solar system section 8 MCQ Questions & Answers Detailed Explanation

Question : 1

What is most important about the Arctic and the Antarctic circles ?

a) Both areas frozen continents

b) Both regions are uninhabited

c) The days and nights are never more than 24 hours long here

d) Within these circle only can the days and nights be longer than 24 hours

Question : 2

Which one among the following statesments about

a) The difference in time to the extent of 1 day on either side of the International Date Line is caused by inclined axis of the Earth

b) The International Date Line mostly passes through the Pacific Ocean

c) The difference in time between the places just either side of the International Date Line is almost 1 day

d) the International Date Line is not correct ? The International Date Line is largely based on the 180° meridian

Question : 3

Match column I with column II and select the correct answer using the code given below the columns:

a) A-(iv), B-(iii), C-(ii), D-(i)

b) A-(iii), B-(ii), C-(i), D-(iv)

c) A-(i), B-(ii), C-(iii), D-(iv)

d) A-(iii), B-(i) C-(iv), D-(ii)

Question : 4

The permanent tilt of the earth’s axis and the revolution of the earth in its orbit together cause

1. deflection of winds and ocean currents.
2. differences in time between places on different meridians.
3. varying lengths of day and night at different times of the year.
4. changes in the altitude of the mid-day sun at different times of the year.

a) 3 and 4

b) 1, 2 and 3

c) 1 and 4

d) 2, 3 and 4

Question : 5

Consider the following statements regarding asteroids and comets?

1. Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material.
2. Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury.
3. Comets show a perceptible glowing tail, while asteroids do not.

a) 1 and 3 only

b) 1, 2 and 3

c) 1 and 2 only

d) 1 only

Question : 6

About 95 per cent of active volcanoes occur at the

1. plate subduction zones
2. transform faults
3. island arcs
4. mid-oceanic ridges.

a) 1 and 4

b) All of the above

c) 1 only

d) 1 and 2