Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 1 - Reading Check Questions (Comprehension): 4

Answer

The Earth's shadow tapers due to the huge size of the sun. Parallel light rays would cause the Earth to cast a shadow that does not taper, but light rays from the upper edge of the sun and from the lower edge of the sun are not parallel.

Work Step by Step

A diagram is found on page 5.
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