# NCERT Solutions For Class 6 Social Science Geography Chapter 3 Motions of the Earth

NCERT Solutions for Class 6 Social Science Geography Chapter 3 Motions of the Earth contains answers to all the questions given in the exercise of the geography book. These solutions have been created on the basis of NCERT Book Guidelines. The solutions are prepared in simple language by our subject experts to help students in their exam preparation.

## NCERT Solutions for Class 6 Geography Chapter 3 PDF

Class 6 Geography (The Earth: Our Habitat) Chapter 3 Questions and Answers

Question 1: Answer the following questions briefly.

(a) What is the angle of inclination of the earth’s axis with its orbital plane?
(b) Define rotation and revolution.
(c) What is a leap year?
(d) Differentiate between the Summer and Winter Solstice.
(e) What is an equinox?
(f) Why does the Southern Hemisphere experience winter and Summer Solstice in different times than that of the Northern Hemisphere?
(g) Why do the poles experience about six months day and six months night?

Answer: (a) The angle of inclination of the Earth’s axis with its orbital plane is 66½°

(b) 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 called Revolution.

(c) The year having 366 days is called a leap year.

(d)

(e) When the whole earth experiences equal days and nights, it is called the equinox. There are two such days i.e. 21st March and 23rd September.

(f) The Earth is spherical in shape and is keeps on revolving and it is divided into two hemispheres. When Southern hemisphere gets in front of the sun, the portion facing the sun experiences summer while the other half away from the sun experiences winter and vice versa.

(g) The Poles experience about six months of day and six months of night because of the tilt of the Earth on its axis. Because of this tilt, each Pole is tilted towards and away from the Sun for about six months each.

When the North Pole is tilted towards the Sun, it experiences continuous daylight for six months. It is night for the same time period at the South Pole. These conditions are reversed when the South Pole is tilted towards the Sun.

Question 2: Tick the correct answer.

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

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

(b) Direct rays of the sun fall on the equator on

(i) 21 March
(ii) 21 June
(iii) 22 December

(c) Christmas is celebrated in summer in

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

(d) Cycle of the seasons is caused due to

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

Question 3: Fill in the blanks.

(a) A leap year has _____ number of days.
(b) The daily motion of the earth is ____
(c) The earth travels around the sun in ____ orbit.
(d) The sun’s rays fall vertically on the Tropic of ____ on 21 st June.
(e) Days are shorter during ____ season.