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.
(e) What is an equinox?
(f) Why does the southern hemisphere experience winter and summer solstices in different times than that of the northern hemisphere?
Tick the correct answers:
(a) The movement of the earth around the sun is known as
(i) Rotation (ii) Revolution (iii) Inclination
(b) Direct rays of the sun fall on the equator on
(i) 21 March (ii) 21 June (iii) 22 December
(c) Christmas is celebrated in summer in
(i) Japan (ii) India (iii) Australia
(d) Cycle of the seasons is caused due to
(i) Rotation (ii) Revolution (iiii) Gravitation
Fill in the blanks:
(a) A leap year has .................... number of days.
(b) The daily motion of the earth is ....................
(c) The earth travels around the sun in .................. orbit.
(d) The sun's rays fall vertically on the Tropic of.............. on 21st June.
(e) Days are shorter during ................ season.
