BC: Now we know how useful the Sun is! It provides light, warmth, and can even be used to tell time! So even when the Sun goes down, we now know why it is nighttime and that the Sun will come back tomorrow!
FC: Why do I see the Sun in the daytime?
1: Standard: S2E2. Students will investigate the position of sun and moon to show patterns throughout the year.
2: First we should ask ourselves, what is the Sun? The Sun is a star. It is a burning ball of fire. We can see it in the sky in the daytime. The Sun gives off light which is why we can see clearly in the daylight.
3: We cannot see the Sun in the nighttime. We can see the moon and other stars. But where does the Sun go?
4: The Earth is constantly spinning. We cannot feel this motion, but it is constantly happening. Because the Earth is spinning, different parts of the world can see the Sun at different times. When it is daytime where we are, on the other side of the Earth, it is nighttime.
5: Earth spins like a top, but much slower. It also does not stop spinning like a top will eventually. The Earth does not need to be "spun" again. | As you can see in this picture, only part of the Earth is lit by the Sun. Even though it looks like the Earth is no longer round, it is! The dark part is just experiencing nighttime. They can see the lit part of the moon.
6: When the Sun is going away from our view, it is called the Sunset.
7: Sometimes the Sun is simply hidden behind clouds!
8: Because the Earth is rotating, it appears that the Sun changes position throughout the day. Sometimes we can tell what time it is by where the Sun is in the sky. We can use a sundial to figure out the time. A sundial works by casting a shadow when the Sun hits it on a specific tick mark.
9: We can even determine time with our bodies by acting as a sundial!