# NCERT Solutions for Class 6 Social Science Geography Chapter 4 Maps

NCERT Solutions for Class 6 Social Science Geography Chapter 4 Maps, A map is a representation or a drawing of the Earth’s surface or a part of it drawn on a flat surface according to a scale.

A map is a visual representation of an entire area or a part of an area, typically represented on a flat surface. Maps represent various things, like political boundaries, physical features, roads, topography, population, climates, natural resources and economic activities.

The movement of the Earth around the Sun in a fixed path or orbit.

## NCERT Solutions for Class 6 Social Science Geography Chapter 4 Maps

1. Answer the following questions briefly.

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

Sol :

The angle of inclination of the earth’s axis with its orbital plane is 66½°.

### (b) Define rotation and revolution.

Sol :

The movement of the earth on its axis is called rotation. The movement of the earth around the sun in a fixed path or an orbit is called Revolution.

### (c) What is a leap year?

Sol :

Every fourth year, February has 29 days instead of 28 days. Such a year with 366 days is called a leap year.

### (d) Differentiate between the Summer and Winter Solstice.

Sol :

Summer Solstice– When the Southern hemisphere experiences the winter season and it is summer in the northern hemisphere. At that point in time, the position of the earth on 21st June is called the Summer Solstice.

Winter Solstice– When the Southern hemisphere experiences the summer season and the reverse occurs in the Northern hemisphere. Then, the position of the earth on 22nd December is called the Winter Solstice.

### (e) What is an equinox?

Sol :

On March 21 and September 23, direct rays of the sun fall on the equator. At this position, neither of the poles is tilted towards the sun. Therefore, the whole earth experiences equal days and equal nights. This is called an equinox.

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

Sol :

The Earth is always revolving and it is divided into two hemispheres. The part of the earth which faces the sun experiences summer and the part away from the sun experiences winter. Therefore, the Southern Hemisphere experiences the Winter and Summer Solstice at different times than that of the Northern Hemisphere.

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

Sol :

The Poles experience 6 months of day and six months of nights due to the inclination of the earth on its axis. This inclination keeps one pole towards the sun and another pole away from the sun for 6 months each. This is the reason behind this condition.

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

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

Sol :

(ii) Revolution

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

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

Sol :

(i) 21 March

### (c) Christmas is celebrated in summer in

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

Sol :

(iii) Australia

### (d) Cycle of the seasons is caused due to

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

Sol :

(ii) Revolution

3. Fill in the blanks.

(a) A leap year has _______________ number of days.

Sol :

A leap year has 366 number of days.

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

Sol :

The daily motion of the earth is rotation.

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

Sol :

The earth travels around the sun in an elliptical orbit.

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

Sol :

The sun’s rays fall vertically on the Tropic of Cancer on 21st June.

(e) Days are shorter during ___________ season.

Sol :

Days are shorter during winter season.

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