Motions of the Earth - Chapter Wise CBSE Solved Question and Answer Based On NCERT
Short Q&A:
Q1: Distinguish between summer solstice and winter solstice?
View Answer
Ans:
Summer solstice
Winter solstice
Sun shines vertically on the Tropic of cancer.
Sun shines vertically on the Tropic of Capricorn.
North pole is inclined towards the sun and the south pole is away from it.
South pole is inclined towards the sun and the north pole is away from it.
This position is on 21stJune.
This position is on 22ndDecember.
When the Sun is directly over the Tropic of Cancer in the Northern Hemisphere, it is also known as the northern solstice.
When the Sun is directly over the Tropic of Capricorn in the Southern Hemisphere, it is also known as the southern solstice.
Q2: Why for about six months day and six months night experienced by poles ?
equal days and equal nights.
shorter days and longer nights.
longer days and shorter nights.
shorter days and shorter nights.
View Answer
Ans:
When Northern Hemisphere is tilted towards the sun, the sun rays fall directly on the Tropic of Cancer. The areas near the pole receive less heat as the rays of sun are slanting. The North Pole is inclined towards the sun and hence experience continuous day light. Since a large portion of Northern Hemisphere is receiving light from the sun, therefore it is summer in regions north of equator. Hence it experiences six months day. In the same way it repeats in Southern Hemisphere when the sun rays fall directly on Tropic of Capricorn and the Southern Hemisphere is tilted towards the sun. It experiences six months day, six months night and vice versa.
