Welcome to the Chapter 3 - Motions of the Earth, Class 6 Social Science - The Earth Our Habitat NCERT Solutions page. Here, we provide detailed question answers for Chapter 3 - Motions of the Earth. The page is designed to help students gain a thorough understanding of the concepts related to natural resources, their classification, and sustainable development.
Our solutions explain each answer in a simple and comprehensive way, making it easier for students to grasp key topics Motions of the Earth and excel in their exams. By going through these Motions of the Earth question answers, you can strengthen your foundation and improve your performance in Class 6 Social Science - The Earth Our Habitat. Whether you’re revising or preparing for tests, this chapter-wise guide will serve as an invaluable resource.
(a) The angle of inclination of the Earth’s axis with its orbital plane is 66 ½◦.
(b) Rotation:
Revolution:
(c) A year with 366 days is called leap year. It occurs once in four years on the month of February and it is 29th day of that month. It is also called intercalary year. The Earth do not take exact 365 days in an year and 24 hours in a day, so we add them as one extra day once in four year.
(d) Differences between summer and winter solstice are as follows:
|
Summer Solstice |
Winter Solstice |
|
Summer solstice occurs on 21st June in Northern Hemisphere. |
Winter Solstice occurs on 22nd December in Southern Hemisphere. |
|
The Northern Hemisphere experiences more heat and light. |
Southern Hemisphere experiences less heat and light. |
|
It is summer in Northern Hemisphere. |
It is winter in Southern Hemisphere. |
|
Days are longer and nights are shorter. |
Nights are longer and days are shorter. |
(e) On 23rd September and 21st March, the rays of sun directly falls on the equator. So, at that position neither of the poles are tilted. So at that specific or we can say a particular day the earth experiences equal days and nights and this is called as equinox.
(f) The Southern Hemisphere experience winter and summers solstice in different times than that of the Northern Hemisphere because:
(g) The poles experiences about six months day and six months night because:
(a) (ii) Revolution
Seasons are caused due to revolution of the earth around the sun. Revolution is a movement of earth near the sun on a fixed path (orbit) in an elliptical way.
(b) (i) 21 March
On 21st March, the rays of sun directly fall on the equator. So at that particular day, the earth is not tilted towards any pole and experiences an equinox (equal days and nights).
(c) (iii) Australia
As Australia is present in the Southern Hemisphere so during December Australia experience summer due to revolution. And, in same manner at that time the Northern hemisphere experiences winter.
(d) (ii) Revolution
As earth revolves around the sun in an elliptical path, so it cause change in season.
(a) 29
There are 29 days in February once in every four year which is an additional day of the year, also called the leap year.
(b) Rotation
Rotation is the daily motion of the earth. The earth completes one rotation in 24 hours. Days and nights are cause due to rotation of the earth.
(c) Elliptical
Elliptical shape is something like oval. The orbit of the planets is an elliptical path. It is not a complete circle.
(d) Cancer
On 21st June, the Northern Hemisphere gets tilted towards the sun. So, the rays of sun directly fall on the Tropic of Cancer (23½◦N).
(e) Winter
Due to summer solstice, the days get shorter and nights get longer than the days.