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Art A a, , a, , , , CHAPTER -3, MOTIONS OF THE EARTH, , Q.1A Answer the following questions briefly., What is the angle of inclination of the earth’s axis with its orbital plane?, Answer:, , The tilted position of the earth’s axis is called the inclination. The earth, makes an angle of 66+ °with the orbital plane., , Q. 1B Answer the following questions briefly., , Define rotation and revolution,, , Answer:, , Rotation: Rotation can be defined as the movement of the earth on its, axis., , Revolution: The movement of the earth around the sun in a fixed path or, orbit is known as a Revolution., , Q.1.C Answer the following questions briefly., , ‘What is a leap year?, , ‘Answer:, , A year with 366 days is called a leap year. It takes 36514 days (one year), to revolve around the sun. Six hours saved every year are added to make, ‘ny (24 hours) over a span of four years. This surplus day is added to the, , Gil MC) eMC acl w Vail ewe y2, SAFEAIRS INSTALL, 4.4% 4Amillion ¥ | STALL |