Why is it day in some places and night in others in the Earth?

Answer 1

The tilt of the Earth causes the seasons because the side of Earth that's closer to the sun has summer or spring. The side of Earth that isn't close to the sun has winter or fall. It also affects global climate.

Answer 2

The sun doesn't actually move. Rather, the earth's rotation (at approximately 24 hours per revolution) makes the sun appear to "rise" and "set" as your position on the earth turns in relation to the sun.
when one part of the Earth is facing towards the sun it would eventually become dark. this is because now your part of the world is beginning to face away from the sun then eventually again it would begin to face the sun a gain. you may think the sun is moving however we are acutually rotating around the sun.

Answer 3

The Earth rotates on its axis, causing different parts of it to face the sun at different times. This rotation creates day and night cycles. When one side of the Earth faces the sun, it is daytime in that region, while the opposite side experiences night.

Answer 4

Not the way you think it does. It proves there is gravity. The sun's gravitational pull draws the earth in towards it. But since the earth's orbital speed is equal in force to that pull, the earth travels in an oval around the sun instead of falling into it.

Answer 5

Days and nights are only equal on the spring and fall equinoxes. In the spring and summer, days are longer than 12 hours; in the autumn and winter, days are shorter than 12 hours. The total day time + night time equals 24 hours, however.

There are two main reasons for this. First, the earth's axis is tilted by roughly 23.4 degrees. The earth behaves like a huge gyroscope, so even though it orbits the sun the tilted axis points in virtually the same direction. You can imagine that when your earthly hemisphere is tilted more torward the sun, then a longer part of one of your diurnal (daily) cycles will find you in sunlight.

Then there is the curious fact that solar days (the length of time between successive transits of the sun across the local meridian) are not all of equal length. This is a reason why we used to refer to "Greenwich Mean Time". The 24 hour day is an averaging of solar days throughout a year. This happens because earth's orbit is an ellipse and not a circle. This is a little harder to explain, but it comes down to the fact that the speed earth travels in its orbit changes a little over a year, while the speed of axial rotation is almost constant.

Answer 6

The earth is tilted at 23 and 1/2 degrees. So when the northern hemisphere is pointed to the sun it gets more sunlight than the Southern Hemisphere. This is the same for the when southern hemisphere is facing the sun This effects seasons.

Answer 7

In the tropical and temperate regions (less than about 66 degrees latitude in either direction) that happens on the equinoxes, which are generally March 21 and September 21 (plus or minus a day either way, depending on the cycle of leap years). On or near the equator, this is more or less true all year long.

In the polar (Arctic or Antarctic) regions, it's sometimes difficult to determine what "daylight" is; if the Sun is within a few degrees of the horizon, it stays light. In northern Russia, this phenomenon is called "white nights", in the mid-spring through mid-summer, when the Sun sets but it doesn't really get dark.

Answer 8

imagine (or try) holding a Basketball in a pitch black room, with a single lamp on in one corner. if u stand in front of the lamp, holding the basketball with both your hands, one side of it will have the light of the lamp on it, the other side will be dark with no light shining on it. if u start to rotate the basket ball, the light always hits the side facing the lamp, but the part of the surface basket ball that is lit is changing as your roating the ball. The earth is the basketball and the light is the sun. As the eart rotates on its axis different parts of the world experience 'light' i.e. daytime and 'dark' i.e. nighttime.

It takes the earth 24 hours to make 1 full rotation on its axis, hence a day is 24hrs long.

On the equatoror, the day is 12 hrs, the night is 12 hrs. As the eart titls on its axis, the length of day in the northern and southern hemishpere will lengthen or shortern. In winter it shortens, summer it lengthens.

North and South poles do not have a normal day and night 24hr pattern. They can have upto 4 months of day, and 4 months of night. The titl of the earth affects this.

The earths rotation around the sun has little effect on daytime and nighttime.

Answer 9

This happens at the two times during the year called equinoxes. It actually never happens at the poles. There is the Vernal Equinox and the Autumnal equinox. While the above conclusion is extremely close to being accurate, it's helpful to know that the equinox itself is a single moment, and it is not a day or two days in length. The equinox is the moment when the center of the sun crosses the equator in its continuous journey from solstice to solstice (and tropic to tropic). The Vernal Equinox is also the astronomical term for the point in space marking the location of the sun at the moment the Vernal Equinox happens. A lot more can be said about this point, but it is beyond the scope of the question.

Answer 10

The sun is one of many stars in the universe. Some stars have planets revolving around them. Most of the ways we measure time are based on the earth's relationship to the sun. For example, a year ends when the the earth has revolved once around the sun. While the earth is rotating around the sun, it is also spinning. A day is how long it takes the earth to rotate once. When it's day time, the side of the earth you live on is facing the sun. When it's night time, that's when your side of the earth is pointing away. So when you see the sun "rising" it's not really rising, it's the side of the earth you're on turning toward the sun. And when you see it "setting" it's not really sinking, it's your side of the earth turning away. This is why it's a different time on different countries than on yours. For example, it's night time where I live in California as I write this answer because the side of the earth the United States is on is pointing away from the sun, but in Japan, it's day time, because Japan is on the side of the earth turned toward the sun.
Sunrise and sunset is caused by the earth rotating around it's axis, it makes one complete rotation within 24 hours (known as 1 day).