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Shadows are dark shapes. They form when light cannot pass through objects. This video shows the shadows of people. Some are walking. One is riding a bike. The shadows move with the people.

Earth is always spinning. Sometimes your place on Earth faces the sun. This is daytime. Sometimes your place on Earth faces away from the sun. This is nighttime. During nighttime, the other side of Earth blocks the sun’s light. It creates a shadow. This shadow is why the night sky is dark.

Explore links

▶	PBS Learning Media: Shifting Shadows
▶	What is a Shadow?
▶	How Shadows on Other Worlds Would Behave Differently Than on Earth
▶	PBS Learning Media: Observing Shadows on Earth

Activities

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Making Connections

Text-to-Self

Where have you seen your shadow? What was the source of the light?

Text-to-Text

Have you read other books about light and shadows? What did you learn?

Text-to-World

Light cannot pass through opaque objects. It can pass through transparent objects. Look at the objects around you. Which are opaque? Which are transparent?

Teacher Resources

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