Why We Have Day and Night

In the picture

1. 1The Sun: it shines light on the Earth
2. 2The lit half: here it is daytime
3. 3The dark half: here it is night
4. 4The spin arrow: the Earth turns once every 24 hours

Examples

• In the morning, your part of the Earth turns into the sunlight and the sky gets bright.
• When it is lunchtime for you, children on the other side of the Earth are asleep in the dark.

Quiz: Why We Have Day and Night (Age 9)

1. 1

   Why do we have day and night?

   • Because the Earth spins, so each side turns toward the Sun and then away from it
   • Because the Moon blocks the Sun’s light at night
   • Because the Sun turns its light off every evening
2. 2

   How long does it take the Earth to spin around one full time?

   • About 24 hours
   • About one week
   • About 12 hours
3. 3

   At any moment, how much of the Earth is having daytime?

   • Only a small spot right under the Sun
   • The whole Earth
   • Half of the Earth

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.