What Causes Day and Night
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The cause of night and day will be the spinning of the planet Earth on its axis. The fifty percent of the planet which is facing sunlight at any given time is at morning so when we spin in comparison to a relatively stationary Sun. It seems to rise and then set. If the Sun sets, this is due to we are is no longer facing sunlight. |
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Back Ground of Day and Night
The Solar System and all planets with in it will be in constant motion. All the planets involve the Sun. The planets additionally rotate, or spin, close to an internal axis. A single manifestation of rotation is actually the cycle of day and night. Day after day, every month, every year, the alternation of day and night continues. It is sometimes sunny outside, as well as other times It's dark. Along with rotation, night and day occur since the Earth is round. Whenever a portion of the planet faces the Sun, It's day time. When identically rotates away from the Sun, It's night time. The cycle of dark and light is actually continuous except close to the North and South Pole. During the Northern Hemisphere summer time, the North Pole usually faces sunlight, so daytime will be continuous for many weeks. Identically, the South Pole faces out of the Sun (Southern Hemisphere winter) and is in continuous night.
Revolution and Rotation
Revolution and rotation also result in the seasons. The Earth’s axis is actually tilted 23.5 degrees through vertical. Which means, that solar power strikes the planet unevenly. It's summer within the North Hemisphere if the North Pole tilts in the direction of sunlight. This puts sunshine much more overhead, so solar power strikes the planet earth much straight. By 50 percent of a North Pole tilts from the Sun, making solar power least direct, therefore it is winter.
Why is there Day and Night
Clearly, you may notice the sun shining on the horizon, it's day, when You it is not its night. Therefore the real question for you is "why is actually there is Sun, at sometimes and not at others?" We could note that the Sun appears to move over the sky beginning in the east each morning, moving toward the south at midday, then in the direction of the west since the day ends. How can this happen?
Long ago, people thought several weird reasons for the Sun and the way it traveled over the sky. The ancient Greeks thought that the Sun rode over the sky in the chariot drawn through 4 white horses driven from the god Heleius! These days, we realize how the Sun seems to move over the sky and we know the earth rotates upon its axis.
