General Knowledge
Why Do We Have Day and Night?
Why does the sky become dark every day?
The short answer
Earth rotates on its axis.
Let’s explore
- Earth rotates on its axis.
- The side facing the Sun experiences daytime. The side facing away from the Sun experiences nighttime.
- Earth takes about 24 hours to complete one rotation.
Quick Quiz
- What is the short answer to “Why Do We Have Day and Night?”?
- Can you explain one key fact in your own words?
- What new question would you like to explore next?
Related Topics
General Knowledge
Why Do We Have Seasons?
Why do we experience spring, summer, fall and winter?
Earth travels around the Sun while its axis is tilted.
Our World
Why Is the Sky Blue?
Sunlight looks white. So why does the sky look blue?
Sunlight contains many colors.
Our World
Why Does the Moon Seem to Follow Our Car?
Have you ever felt as though the Moon is following your car?
Nearby trees, houses and road signs appear to move quickly because they are close to us.