Question

Explain What is the umbra and preumbra

Answer 1

Umbra is the darkest part of a shadow.

Preumbra is the lighter/brighter part of the shadow.

Hope this helps!!!

Answer 2

The dark part of the shadow is the umbra, and the part that is a little lighter is the penumbra. They can be experienced on Earth, but more readily in space, such as during a solar eclipse, when the Moon moves in front of the Sun and leaves a shadow on Earth.

Step-by-step explanation: