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

Searching for Class 6 Geography Chapter 3 solutions? In this post you will find complete and easy explanations of NCERT Solutions for Class 6 – Motions of the Earth. These answers are written in simple language for quick revision and exam preparation. Students following JKBOSE can also benefit from these answers along with their JKBOSE Class 6 notes.

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• Short Answer Questions
• Multiple Choice Questions
• Fill in the Blanks
• Download PDF

Short Answer Questions

1. Answer the following questions briefly.

a) What is the angle of inclination of the earth's axis with its orbital plane?

Ans: The angle of inclination of the earth's axis with its orbital plane is 66.5°.

b) Define rotation and revolution.

Ans: Rotation is the movement of the earth on its axis.
Revolution is the movement of the earth around the sun in a fixed path or orbit.

c) What is a leap year?

Ans: A year with 366 days is called a leap year.

d) Differentiate between the Summer and Winter Solstice.

Ans: The difference between the Summer Solstice and Winter Solstice is as following:

Summer Solstice

• Summer solstice occurs when the North Pole is tilted closest to the Sun.
• It occurs on 21st June.
• The summer solstice brings the longest day in the Northern Hemisphere, as it is tilted towards the sun.
• Southern Hemisphere has the shortest night.
• Sun rays directly fall over Tropic of Cancer.
• The places beyond the Arctic circle experience continuous daylight for about six months.

Winter Solstice

• Winter solstice occurs when the North Pole is tilted farthest from the sun.
• It occurs on 22nd December.
• Winter solstice brings the longest night in the Northern Hemisphere as it is tilted away from the sun.
• Southern Hemisphere has the longest days.
• Sun rays directly fall over Tropic of Capricorn.
• The places beyond the Antarctic circle experience continuous daylight for about six months.

e) What is an equinox?

Ans: The position of the earth experiencing equal days and equal nights, due to the direct sun rays fall on the equator on 21st March and 23rd September, when neither of the poles is tilted towards the sun is called equinox.

f) Why does the Southern Hemisphere experience Winter and Summer Solstice in different times than that of the Northern Hemisphere?

Ans: The Southern Hemisphere experiences winter and summer solstices in different times than that of Northern Hemisphere due to the part of the Earth which faces the Sun experiences summer, and the part away from the Sun experiences winter.

g) Why do the poles experience about six months day and six months night?

Ans: The poles experience about six months day and six months night due to the inclination of the Earth that is, Earth's axis is tilted (about 23.5°) on its own axis. This inclination of the earth keeps one pole to face the sun and another pole away from the sun for six months each.

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Multiple Choice Questions

2. Tick the correct answers.

a) The movement of the earth around the sun is known as
i) Rotation ii) Revolution iii) Inclination

Ans:  ii) Revolution

b) Direct rays of the sun fall on the equator on
i) 21 March ii) 21 June iii) 22 December

Ans:  i) 21 March

c) Christmas is celebrated in summer in
i) Japan ii) India iii) Australia

Ans:  iii) Australia

d) Cycle of seasons is caused due to
i) Rotation ii) Revolution iii) Gravitation

Ans: ii) Revolution

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Fill in the Blanks

3. Fill in the blanks.

a) A leap year has 366 number of days. 

b) The daily motion of the earth is Rotation.
c) The earth travels around the sun in elliptical orbit. 

d) The sun's rays fall vertically on the Tropic of Cancer on 21st June. 

e) Days are shorter during winter season. 

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