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 seasons is caused due to
(iii) Gravitation