NCERT Solution Class 6th Social Science Geography Chapter – 3 Motions of the Earth Question & Answer

NCERT Solutions Class 6th Social Science Geography Chapter – 3 Motions of the Earth

TextbookNCERT
Class  6th
Subject Social Science (Geography)
Chapter3rd
Chapter Name Motions of the Earth
CategoryClass 6th Social Science (Geography)
Medium English
SourceLast Doubt
NCERT Solution Class 6th Social Science Geography Chapter – 3 Motions of the Earth Question & Answer – These motions are – rotation around its own axis and revolution around the Sun. Rotation means the movement of the earth on its axis. It rotates from the west towards the east. Revolution means the movement of the Earth around the Sun in a fixed path or orbit. 

NCERT Solutions Class 6th Social Science Geography Chapter – 3 Motions of the Earth

Chapter – 3

Motions of the Earth

Question & Answer

1. Answer the following questions briefly.

(A) What is the angle of inclination of the earth’s axis with its orbital plane?
Answer – The angle of inclination of the earth’s axis with its orbital plane is 66 1/2.

(B) Define rotation and revolution.
Answer –  
Rotation – The movement of the earth on its axis is known as rotation.
Revolution – The movement of the earth around the sun in a fixed path or orbit is known as revolution.

(C) What is a leap year?
Answer – The year in which February is of 29 days instead of 28 days is called a leap year. Thus a leap year is of 366 days instead of 365 days.

(D) Differentiate between the summer solstice and winter solstice.
Answer – Difference between the summer solstice and winter solstice
Summer solsticeWinter solstice
In the Northern Hemisphere the longest.  day and the shortest night occur on 21st June. At this time in the Southern Hemisphere it occurs the shortest day and the longest night. This position of the earth is called summer solstice.In the Northern Hemisphere the shortest day and the longest night occur on 22nd December. At this time in the Southern Hemisphere it occurs the longest day and the shortest night. This position of the earth is known as winter solstice.
(E) What is an equinox?

Answer – Equinox is the position of the Earth on 21st March and 23rd September. Both the hemispheres experience equal days and nights.

• On 21st March in the Northern hemisphere, this position is the spring equinox. Autumn equinox is in the Southern hemisphere.

• In the Northern hemisphere on 23rd September the position of the Earth is Autumn equinox and in the Southern hemisphere, it is the Spring equinox.

(F) Why does the Southern Hemisphere experience winter and summer solstice in different times than that of the Northern Hemisphere?

Answer – The Southern hemisphere experiences winter and summer solstice in different times than, that of the Northern hemisphere because of the following reasons –

• The southern hemisphere is tilted towards the Sun on 22nd December, hence summer solstice is there in the Southern hemisphere. At that time winter solstice is in the Northern hemisphere when it is away from the Sun.

• On the contrary, on 21 June the Northern hemisphere is tilted towards the Sun.

• Hence summer solstice is in the Northern hemisphere and winter solstice is in the Southern hemisphere.

(G) Why do the poles experience about six months’ day and six months’ night?

Answer – The poles experience six months’ day and six months’ night because of the following reasons –

• When the Northern hemisphere is tilted towards the Sun, the North Pole remains in the light for the whole of the day (24 hours). This position remains for six months (from 21st March to 23rd September).

• On the contrary in the Southern hemisphere, the South Pole does not get light during these six months. Hence it experiences night for six months (from 23rd September to 21st March).

• When the Southern hemisphere is tilted towards the sun, the South Pole remains in light for 24 hours for six months from 23rd September to 21st March. The reverse is the conditions at the North Pole-six months’ night.
2. Tick the correct answer.

(A) The movement of the earth around the sun is known as

(i) Rotation
(ii) Revolution
(iii) Inclination.

Answer – (ii) Revolution

(B) Direct rays of the sun fall on the equator on(i) 21 March
(ii) 21 June
(iii) 22 December.Answer – (i) 21 March

(C) Christmas is celebrated in summer in

(i) Japan
(ii) India
(iii) Australia

Answer – (iii) Australia

(D) Cycle of the seasons is caused due to

(i) Rotation
(ii) Revolution
(iii) Gravitation

Answer – (ii) Revolution
3. Fill in the blanks.

(a) A leap year has ………… a number of days.
Answer – 366

(b) The daily motion of the earth is ……….……

Answer – Rotation

(c) The earth travels around the sun in…………….orbit.

Answer – Elliptical

(d) The sun’s rays fall vertically on the Tropic of…………….. on 21st June.

Answer – Cancer 

(e) Days are shorter during …………season.

Answer – Winter
NCERT Solution Class 6th Geography All Chapters Question Answer
Chapter 1 – The Earth in the Solar System
Chapter 2 – Globe Latitudes and Longitudes
Chapter 3 – Motions of the Earth
Chapter 4 – Maps
Chapter 5 – Major Domains of the Earth
Chapter 6 – Our Country India
NCERT Solutions Class 6th Geography All Chapters Notes
Chapter 1 – The Earth in the Solar System
Chapter 2 – Globe : Latitudes and Longitudes
Chapter 3 – Motions of the Earth
Chapter 4 – Maps
Chapter 5 – Major Domains of the Earth
Chapter 6 – Our Country India
NCERT Solution Class 6th Geography All Chapters MCQ
Chapter 1 The Earth in the Solar System
Chapter 2 Globe Latitudes and Longitudes
Chapter 3 Motions of the Earth
Chapter 4 Maps
Chapter 5 Major Domains of the Earth
Chapter 6 Our Country India

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