Advertisements
Advertisements
Question
Describe the two interesting phenomena made by the circle of illumination viz., Solstice and Equinox.
Advertisements
Solution
The circle of illumination is the lighted part of the earth by the sun. On June 21, Northern Hemisphere enjoys the longest day due to the sun’s position overhead at the Tropic of Cancer. It is called the Summer Solstice. On the other hand, when the sun is overhead on the Tropic of Capricorn, the Southern Hemisphere gets the longest day on December 22, which is known as Winter Solstice. The dates of Equinox are 21st March and 23rd September when the days and nights are equal all over the world and there are spring and autumn seasons in Northern Hemisphere and autumn and spring in Southern Hemisphere respectively.
RELATED QUESTIONS
Express 1° angular distance in kilometers.
How can the general climate of an area be described with the help of the lines of latitudes?
Give reasons for the following
The speed of the rotation of the earth is greater at the Equator than at the Arctic Circle.
Describe how the duration of sunlight changes from the Equator to the Poles with respect to the angle of incidence during the solstices.
Describe how seasons are made and reversed between the Northern and Southern Hemispheres.
Distinguish between :
Twilight and Dawn.
Name the shortest day in the Northern Hemisphere.
Give reasons for the following statement:
Beyond the tropics, the Sun is never overhead
Why are days longer than nights in summer?
Why are days and nights equal at all places on earth on September 23?
