Explain how day and night occur.?

Answer 1

the planet spinning on it's axis
The sun and the gravity pull from the sun cuases the earth to spin at a pole though so as the earth spins around the sun it also spins on its axis to cause day and night
the earth rotates on its axis as it moves around the sun. The side facing the sun is lit up by the sun (day). The side facing away from the sun is not being lit up by the sun (night).
It is called "a day", which may be confusing because of the two different meanings

• time between sunrise and sunset,
• the 24-hour cycle

It may also be called a "circadian cycle".

The cycle is caused by the rotation of the Earth on its axis.

The Earth is a ball floating in space and orbiting the Sun our local star. This star gives off allot of light and the side (hemisphere) of the Earth facing the star is illuminated by it. This hemisphere is said to be in day light. The other hemisphere (facing away from the Sun) is in shadow and this hemisphere is said to be in darkness.

However, the ball that is the Earth is rotating on its own axis and this means that if you are standing on the day-lit side of the Earth, you are carried round to the dark side and then back into the day lit side. This rotation therefore causes the cycle of day and night.

In broad terms, the entire day-night cycle is referred to as a day. One day contains a daytime segment and a night time segment almost everywhere.

However, because the axis of rotation of the Earth is tipped over some 23.5 degrees relative to the plane in which it goes round the Sun, the Arctic and Antarctic regions are illuminated for 6 months at a time and are then in darkness for 6 months. Here a day lasts 1/2 a year.

Words related to the 24 hour period are: diurnal and circadian. The day as we experience it is directly related to what is called the synodic rotation of the earth-- its rotation relative to the position of the sun in the sky. This idea sounds simple, but it is a tricky concept to grasp fully.
Earth's rotation causes day and night.
The rotation of the Earth causes the Sun to pass out of view, then back into it, at regualr intervals.
We get day and night because the Earth is rotating on it's axis and because it won't stop rotating we will keep getting day,night, day, night,etc.

Answer 2

'''Day and night:'''

The Earth rotates on an axis. When it rotates, half of the Earth is exposed to the sun and half is not. When a part of the earth is exposed to the sun it is ''day'' and when it is not exposed to the sun it is ''night.'' Pretty simple.

'''The seasons:'''

axis------> /

Earth--> (/)-------O<--Sun

axis----> /

Earth's axis is tilted so in summer (for the Southern Hemisphere) the Southern Hemisphere is in the sun longer than the Northern Hemisphere.

- Montgomery4.0

Answer 3

The Earth is spinning on its axis while also circling the sun at the same time. One revolution on its axis creates day and night. Day is when the part of the Earth where you live is facing the sun, when it turns away from the sun, it is night time. The Earth is also tilted a bit. So as the Earth is revolving around the sun , the distance the Earth is from the sun creates the seasons as the Earth turns.

Answer 4

Day and night is formed by the earths rotation. When one half of the earths side faces the sun, then it is day time. The other half faces space. Therefore it is nighttime. The seasons are formed by the orbit of the earth around the sun.

Answer 5

The sun is stationary in centre surrounded by planets and the earth moves around the sun but it also spins on a angle meaning people on the other side of the earth of Australia when it's day here it's night there because the sun's rays goes onto the planet but does not submerge it.

Answer 6

Seasons occurr because of the tilt of the Earth on its axis.

Answer 7

Earth's rotation on its axis causes day and night.

Answer 8

The rotation of the Earth on its axis causes day and night. The half of the Earth facing the Sun experiences day and the half facing away has night.