S2.9.2 For the adult
Why we have day and night
Why does it get dark at night?
What this chapter teaches
The Earth spins once in about 24 hours, so a place turns toward the Sun for day and away from it for night. The Sun does not go away at night, and it does not hide behind hills.
Three questions to ask
There is no one right wording. Listen for the idea.
- What do you think happens to the mark on the ball as you turn it?
- How would you explain night to a friend who says the Sun hides behind the hills?
- Why is it day in one place and night in another at the same time?
After the chapter, the learner can
- Show day and night with a lamp and a spinning ball
- Explain why half of the Earth has day while half has night
What they copy into their notebook
The Earth spins once in about 24 hours. The half facing the Sun has day. The half facing away has night. The Sun does not go away. Your place turns.