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प्रश्न
Give reasons for the following statement:
The regions, near North Pole and South Pole, have six months of continuous day-light and darkness.
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उत्तर
On account of the obliquity of the earth’s axis, for six months i.e., from March 21 to Sept. 23, the north pole is inclined towards the Sun and is always in the light. During this period the South pole is inclined away from the Sun and is throughout in the dark. Hence it is a day for six months at the north pole and night at the south pole. But from September 23 to March 21st the case is just the opposite. The north pole is inclined away from the Sun and is in the dark while the south pole is inclined, towards the Sun and is in the light.
संबंधित प्रश्न
Which temperature zone receives almost vertical rays of the sun and which zones receive slanting rays?
Give reasons for the following:
25th of December in New Zealand may be one of the hottest days of the year.
Give reasons for the following
Noon is hotter than morning.
Describe the two interesting phenomena made by the circle of illumination viz., Solstice and Equinox.
Describe how the duration of sunlight changes from the Equator to the Poles with respect to the angle of incidence during the solstices.
Distinguish between :
Twilight and Dawn.
Give reasons for the following statement :
The duration of day and night is equal everywhere on 21st March and 23rd September.
Give reasons for the following statement:
Beyond the tropics, the Sun is never overhead
Give reasons for the following statement:
On the 22nd of December, the altitude of the midday Sun at Colombo is different from that of Delhi.
Give reasons for the following:
Altitude of the Sun varies at a place according to seasons.
