Chapter 3: Motions of the earth

Q1. Define the following::

        Rotation, revolution, orbital plane, circle of illumination, leap year, earth day

Q2.Name two motions of the earth?

Q3.How much time earth takes to complete one rotation?

Q4.Which part of earth has day and which part has night while rotating? Explain with the help of diagram.

Q5Why does leap year come after four years?

Q6.Explain with the help of diagram _____ summer solstice, winter solstice, equinox.

Q7 Fill in blanks:-

       A)The model showing accurate shape of the earth is called__________.

       B) Northern tip of the axis is called________.

       C) Southern tip of the axis is called_______.

       D) Earth rotates from ___________.

       E) Leap year is counted after every ____ years.

       F) The days and nights are caused by________.

Q8. Suppose you and your family want to visit Australia around 21 June for a week. Make a list of things that you have to pack for the trip.