Question

1. Answer the following questions briefly.
(a) What is the angle of inclination of the earth's axis with its orbital plane?
(b) Define rotation and revolution.
(c) What is a leap year?
(d) Differentiate between the Summer and Winter Solstice.
(e)
What is an equinox?​

Answer 1

Answer:

a} 23.5 degree

b) when an object is circling around its own it is called rotation

when an object move around any other object in a circular path it is known as revolution

c) the year occurring once every four years have 366 days (feb 29) is a leap year

D) the major difference between summer solstice and Winter solstice is is days in summer solstice are longer than Winter solstice and night in summer solstice is shorter than Winter solstice

e) the time or date occurring twice a year which Sun crosses celestial equator when day and night are of equal length(about Sept 22 and 20 march) it's called equinox

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