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प्रश्न
How has the phenomenon of the ‘Midnight Sun’ come about?
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उत्तर
The sun's rays fall vertically on the Tropic of Cancer at the Northern Hemisphere's summer solstice. At the equator, sunlight lasts for 12 hours; at 23 1/2° N, it lasts for 13 hours and 27 minutes; at 66 1/2° N, it lasts for 24 hours. The areas outside the Arctic Circle have 24-hour daylight. This phenomenon, which only occurs near the poles, is known as the "Midnight Sun."
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संबंधित प्रश्न
Who devised the lines of latitude and longitude?
Name the two hemispheres of the earth made by the Equator.
Give reasons for the following
Days and nights are equal at all places on earth on March 21.
Describe the two interesting phenomena made by the circle of illumination viz., Solstice and Equinox.
Which is the longest and which is the shortest day in the Northern Hemisphere and why?
When is the spring equinox?
Give reasons for the following Statement :
The areas, lying on the Equator, have their duration of day-light almost constant throughout the year.
Give reasons for the following statement:
Daylight decreases as we go polewards from March 21st to June 21st in the Southern Hemisphere
Give reasons for the following statement:
Beyond the tropics, the Sun is never overhead
Give reasons for the following :
Seasons are reversed between Northern and Southern Hemisphere.
