Mon Prof Augmenté
Earth Turns in Space
Age 9 · Astronomy
Earth spins around an imaginary line called its axis. The half facing the Sun is lit, and the other half is dark.
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Age 9: open this week
Browse Age 9
In the picture
- The sunlit half of Earth: the side turned toward the Sun, where it is day.
- The shadowed half of Earth: the side turned away from the Sun, where it is night.
- The curved arrow around Earth: one full spin in about 24 hours.
- The dashed line through Earth: the axis it spins around.
Examples
- Breakfast in morning daylight and bedtime in darkness.
- A lamp lighting one side of a ball while the other side stays dark.
Key takeaways
- Earth spins once about every 24 hours.
- The half facing the Sun has day; the other half has night.
Quiz: Earth Turns in Space (Age 9)
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Why is one half of Earth lit while the other half is dark?
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About how long does Earth take to spin all the way around once?
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What does Earth spin around?
The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.
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