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Related free worksheets for this video can be found here:
https://ngscience.com/grades/grade-3/units/earth-and-space

Explanatory video on the Earth's rotation and the resultant pattern of day and night on Earth. Interactive and printable worksheets relating to this topic are on ngscience.com.

All content on the ngscience.com portal is aligned to the Next Generation Science Standards (NGSS).

In space, the Earth moves in different ways. One way the Earth moves is by spinning on its axis. An axis is an imaginary line that runs through the Earth’s center. This spinning movement on its axis is called a rotation.

As it rotates, part of the Earth is facing the sun. This part of the Earth it lit up and experiences daytime. At the same time, the opposite side of the Earth is facing away from the sun. This part of the Earth is in darkness and it is nighttime.

It takes the Earth 24 hours to complete one rotation. The repeating rotation of the Earth is why we experience the daily pattern of day and night.

Hello, primary students! Have you ever wondered why we have day and night? Let me explain it to you.

Our planet Earth spins on an imaginary line called an axis. It's kind of like a spinning top, but instead of just wobbling, it spins around completely. This spinning takes 24 hours to complete, which means that in one day, Earth completes one full rotation.

Now, here's the fun part - when one side of Earth is facing towards the sun, that side experiences daylight. And when the other side of Earth is facing away from the sun, that side experiences night time. So, as the Earth rotates, different parts of the planet are exposed to the sun's light, while other parts are in the shadows, creating day and night.

Isn't that cool? It means that when we're sleeping and it's dark outside, other parts of the world are enjoying bright sunshine and having lots of fun. And when we're having our daytime activities, other parts of the world are getting ready to go to bed.

So now you know why we experience day and night on Earth!