universe & solar system section 4 Practice Questions Answers Test with Solutions & More Shortcuts

Question : 46

Consider the following statements:

1. Since Venus is seen in the East in morning and in the West in evening. It is called ‘Morning star’ as well as ‘Evening star’.
2. The Earth looks blue when seen from the space due to the presence of large amount of water, hence it is called ‘Blue Planet’.

a) Both 1 and 2

b) Neither 1 nor 2

c) 2 only

d) 1 only

Question : 47

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 : 48

Albedo effect would be relatively higher in

a) noon

b) late evening only

c) early morning only

d) early morning and late evening

Question : 49

What does the term ‘sial’ refer to ?

a) Ocean bottom rocks

b) A rock which is rich in calcium

c) The core part of the earth

d) Earth’s surface layer

Question : 50

Which one of the following is the time required for the earth to return to a given point in its orbit with reference to fixed stars called ?

a) Tropical year

b) Sidereal year

c) Solar year

d) Lunar year