The Universe and Solar System 6th Social Science Lesson 5 Questions in English
71. The Northern Hemisphere is inclined towards the Sun for six months_____
a) from 21st March to 23rd September = Answer
b) from 1st March to 23rd September
c) from 21st March to 3rd September
d) from 21st March to 23rd July
Explanation
The Northern Hemisphere is inclined towards the Sun for six months from 21st March to 23rd September while the Southern Hemisphere is tilted away from the Sun.
72. Which of the following statement is incorrect?
1) From Sep 23rd to March 21st the Northern hemisphere is inclined towards the Sun and the southern hemisphere faces away from the Sun.
2) The southern Hemisphere is inclined towards the Sun for six months from 21st March to 23rd September while the northern Hemisphere is tilted away from the Sun.
a) 1 alone
b) 2 alone
c) 1, 2 = Answer
d) None
Explanation
The Northern Hemisphere is inclined towards the Sun for six months from 21st March to 23rd September while the Southern Hemisphere is tilted away from the Sun. From Sep 23rd to March 21st the southern hemisphere is inclined towards the Sun and the northern hemisphere faces away from the Sun.
73. Which of the following statement is correct?
1) Perihelion is the Earth’s closest position to the Sun.
2) Aphelion is the farthest position of the Earth from the Sun.
a) 1 alone
b) 2 alone
c) 1, 2 = Answer
d) None
Explanation
Perihelion is the Earth’s closest position to the Sun. Aphelion is the farthest position of the Earth from the Sun.
74. Which of the following day is Equinoxes?
a) July 13
b) March 21 = Answer
c) May 21
d) May 23
Explanation
The equator faces the Sun directly on 21 March and 23 September. These two days are called Equinoxes, during which the day and night are equal throughout the Earth.
75. On which day Summer Solstice occur?
a) July 13
b) 21st June = Answer
c) 22nd December
d) 21st march
Explanation
On 21st June, the Tropic of Cancer faces the Sun. This is known as Summer Solstice. It is the longest day in the Northern Hemisphere and longest night (shortest day) in the Southern Hemisphere.
76. Which day is winter solstice?
a) July 13
b) November 26
c) December 22 = Answer
d) December 1
Explanation
On 22nd December, the Tropic of Capricorn faces the Sun. It is called as Winter Solstice. It is the longest day in the Southern Hemisphere and longest night (shortest day) in the Northern Hemisphere.
77. The percentage of nitrogen in atmosphere is______
a) 68%
b) 78% = Answer
c) 88%
d) 98%
Explanation
The major gases are Nitrogen (78%) and Oxygen (21%). The other gases like Carbon dioxide, Hydrogen, Helium, Argon, and Ozone are present in meager amounts.
78. The Gulf of Mannar Biosphere Reserve in the Indian Ocean covers an area of______
a) 1000 sq.km
b) 10,500 sq.km = Answer
c) 9500 sq.km
d) 7550 sq.km
Explanation
The Gulf of Mannar Biosphere Reserve in the Indian Ocean covers an area of 10,500 sq.km in the ocean.
79. The term Bio is derived from______
a) Greek = Answer
b) Roman
c) Italic
d) Sanskrit
Explanation
The narrow belt of interaction among the lithosphere, the hydrosphere and the atmosphere, where life exists is known as Biosphere. Bio means life in Greek.
80. The soil and rocks are covered in_____
a) Lithosphere = Answer
b) Hydrosphere
c) Atmosphere
d) Biosphere
Explanation
The word lithosphere is derived from the Greek word Lithos, which means rocky. The Lithosphere is the land on which we live. It is the solid outer layer of the Earth consisting of rocks and soils.