1What is a shadow? How is it formed?
2In the course of orbiting, if the earth comes between the sun and the moon, which eclipse occurs? Draw a labelled picture and explain.
3Write the difference between a total and a partial solar eclipse.
4Write the difference between a total and a partial lunar eclipse.
5Write the difference between umbra and penumbra.
6Give the reason: a lunar eclipse occurs only at purnima.
7Give the reason: a solar eclipse occurs only at aunsi.
8Give the reason: to have an eclipse, the sun, moon and earth must fall in one straight line.
9Why must a solar eclipse never be looked at with the naked eye?
10The three bodies line up twice every month. Why then is there not an eclipse twice a month?