Question

1)What are the conditions
for shadow formation.
2) What is an eclipse.

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Answer 1

Explanation:

So there are two conditions for an eclipse: The sun must be crossing a node, and the moon must be crossing either the same node (solar eclipse) or the other node (lunar eclipse). That means, of course, that solar eclipses can occur only when the moon is new, and lunar eclipses can occur only when the moon is full.

Answer 2

Answer:

To form a shadow the most necessary condition is that we require a screen as well a light source.

An eclipse occur when when light of sun is blocked by earth or moon from falling on moon and earth respectively.

Hope it is clear.

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