Draw a well labelled diagram to show that places on the same longitude have the same time.

Draw a well labelled diagram showing the different heat zones of the world.

Give a geographical reason for each of the following:
(i) Lines of longitude are called meridians of longitude.
(ii) Lines of longitude are of same length.
(iii) Diametrically opposite lines of longitude and the Equator are called Great Circles.

Describe the lines of longitude.