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why do we have night and day ks2

This clip could be used as a part of a topic about Earth and space. After showing the clip, pupils could simulate the same investigations with globes, torches and Lego. They could record an explanation of why there is day and night, why the Sun rises in the east and sets in the west and how shadows are formed. On a sunny day, pupils could record their shadows on the playground at hourly intervals to track how the shadows change shape and direction.

Pupils could prepare a presentation on what they have found out and present it to another class or in assembly.
The Earth takes 24 hours to make one complete turn. Why do we have day and night? We have day and night because the Earth rotates. It spins on its axis, which is an imaginary line passing through the North and South Poles.

The Earth spins slowly all the time, but we don't feel any movement because it turns smoothly and at the same speed. How long does it take the Earth to turn around? The Earth takes a whole day (24 hours) to makea complete turn. Why is the Sun in the sky at some times and not at other times? At any time half of the Earth faces the sun. This part has day. The other half of the Earth faces away from the Sun.

It receives no light. It is dark and has night. The sun is the source of light for day. Why does the sun seem to move across the sky? The Sun does not move. It seems to move across the sky starting in the east in the morning, moving toward the south at noon, and then toward the west as the day ends. It is the Earth turning that makes it seem as though the Sun is moving.

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