Motions Of The Earth - Class 6 Geography - Extra Questions

Fill in the blank.
A leap year has ___ number of days.

A leap year has 366 numbers of days.


Briefly explain the summer solstice? 

On 21st June, the Northern Hemisphere is tilted towards the sun. The rays of the sun fall directly on the Tropic of Cancer. As a result, these areas receive more heat. The areas near the poles receive less heat as the rays of the sun are slanting. The North Pole is inclined towards the sun and the places beyond the Arctic Circle experience continuous daylight for about six months. Since a large portion of the Northern Hemisphere is getting light from the sun, it is summer in the regions north of the equator. The longest day and the shortest night at these places occur on 21st June. At this time in the Southern Hemisphere all these conditions are reversed. It is winter season there. The nights are longer than the days. This position of the earth is called the Summer Solstice. 








Which motion of earth is associated with the changes in season?

Rotation and Revolution
The rotation of the earth on its own axis and the revolution of earth around the sun cause changes in season and day and night. The change in seasons is caused by the rotational tilt of the earth on its axis when it revolves around the sun.


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

Since it is winter in Southern Hemisphere when it is summer in the Northern Hemisphere, therefore the position of the earth which is called Winter Solstice in one Hemisphere is the Summer Solstice in the other, and vice-versa. 


Fill in the blank.
The sun's rays fall vertically at the Tropic of _____ on 22nd December.

Capricorn


Write a short note on winter solstice?

On 22nd December, the Tropic of Capricorn receives direct rays of the sun as the South Pole tilts towards it. As the suns rays fall vertically at the Tropic of Capricorn (2312 S), a larger portion of the Southern Hemisphere gets light. Therefore, it is summer in the Southern Hemisphere with longer days and shorter nights. The reverse happens in the Northern Hemisphere. This position of the earth is called the Winter Solstice.






Which dates are important for equinox? Discuss them. 

21st March and 23rd September, these dates are associated with equinix. On 21st March and September 23rd, direct rays of the sun fall on the equator. At this position, neither of the poles is tilted towards the sun so, the whole earth experiences equal days and equal nights. This is called an equinox.






Difference between the summer solstice and winter solstice.

Difference between 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. 


What is an equinox?

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


Match the items in column A correctly with those given in column B

 List 1List 2 
Summer solstice21st June 
Winter solstice22nd December 
Equinox23rd September 
Orbit Fixed path 
RotationThe daily motion of the earth 
    


Short Answer type questions:
a. Summer solstice
b. Winter solstice
c. Equinox
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(a) Summer solstice: The Northern Hemisphere is tilted towards the sun on 21 st June. As the rays of the sun fall directly on the Tropic of Cancer, these areas receive more heat. But the areas size to the poles receive less heat due to the slanting rays of the sun. The North Pole is inclined towards the sun the places beyond the Arctic Circle experience continuous daylight for about six months. Since a large area of the Northern Hemisphere is getting light from the sun, it is summer in the regions north of the equator. The longest day and the shortest night at these places occur on 21 st June. These conditions are reversed in the Southern Hemisphere at this time. It is winter season there having longer nights and shorter days. This position of the earth is known as the summer solstice.

(b) Winter solstice: On 22nd December, the Tropic of Capricorn receives direct rays of the sun as the South Pole tilts towards it. As the suns rays fall vertically at the Tropic of Capricorn, a larger portion of the Southern Hemisphere gets light. Hence, the Southern Hemisphere enjoys summer having longer days and shorter nights. This position of the earth is called the winter solstice.

(c) Equinox: On21st March and 23rd September direct rays of the sun fall on the equator. At this position, neither of the poles is tilted towards the sun. As result, the entire earth experiences equal days and equal nights. This phenomenon is known as an equinox.


Class 6 Geography Extra Questions