The Earth takes 24 hours to make one complete turn. Why do we have day and night? We have day and night because the Earth rotates. It spins on its axis, which is an imaginary line passing through the North and South Poles. The Earth spins slowly all the time, but we don\’t feel any movement because it turns smoothly and at the same speed. How long does it take the Earth to turn around? The Earth takes a whole day (24 hours) to makea complete turn. Why is the Sun in the sky at some times and not at other times? At any time half of the Earth faces the sun.
This part has day. The other half of the Earth faces away from the Sun. It receives no light. It is dark and has night. The sun is the source of light for day. Why does the sun seem to move across the sky? The Sun does not move. It seems to move across the sky starting in the east in the morning, moving toward the south at noon, and then toward the west as the day ends. It is the Earth turning that makes it seem as though the Sun is moving.
Why do we have day and night? Our new enquiry aims to look at the Science behind day and night, looking at Space and considering time zones in different places.
Use the links below to do some of your own research. Click the picture below to visit Google Earth, where you can look at any place in the world! We have night and day on Earth because the Earth rotates or spins on its axis. (The axis is an imaginary rod or pole that passes through the North and the South Poles. ) It takes a whole day or approximately 24 hours for the Earth to complete one rotation. At any time in the 24 hours, half the Earth faces the Sun and has day.
The other half of the Earth faces away from the Sun and has night. Click the picture below to find out more. A Time Zone generally refers to any of the 24 regions of the Earthвs surface, loosely divided by longitude, in which standard time is kept. Click to learn about time zones or on picture below. What can you find out about space? Why not click the picture below to find out more about day and night! Watch the video below to find out how we have day and night!