Due to the axis of Earth being tilted, seasons such as Winter, Spring, Summer, and Fall are formed. The way these are formed are rather simple. When the Earth's tilt is further from the sun on the northern hemisphere, the season could be Winter or Spring in the Northern hemisphere and the exact opposite (Summer or Fall) in the Southern Hemisphere. When the Earth is tilted so that the sun is further from the Southern Hemisphere, the Northern Hemisphere is experiencing Summer or Fall while the Southern Hemisphere is experiencing Winter and Spring.
Due to the axis of Earth being tilted, seasons such as Winter, Spring, Summer, and Fall are formed. The way these are formed are rather simple. When the Earth's tilt is further from the sun on the Northern hemisphere, the season could be Winter or Spring in the Northern hemisphere and the exact opposite (Summer or Fall) in the Southern Hemisphere. When the Earth is tilted so that the sun is further from the Southern Hemisphere, the Northern Hemisphere is experiencing Summer or Fall while the Southern Hemisphere is experiencing Winter and Spring.
Because the Earth is tilted (at 23.5 deg.), at different times in its orbit around the sun (which takes one year), certain areas of the Earth are closer to or further away from the sun than other areas of the Earth. In the northern hemisphere, the Earth is closest to the sun in June, which makes summer at this time of year. At this time of year, it is winter in southern hemisphere because it is at its furtherest point from the sun, which is due to the tilt of the Earth.
It's not so easy to explain in words as with a diagram, but I'll try.
If the Earth's axis was perpendicular to the plane in which the planet orbits the Sun, we would have night and day of equal lengths all year round.
However, as it is tilted with respect to that plane, as the Earth orbits the Sun one pole will be facing somewhat away from the Sun and the other towards it. That will cause the "towards" half of the sphere above or below its Equator to be irradiated at a higher angle of incidence than the other half.
This higher angle of incidence to the Sun's heat and light gives longer, hotter days. As the orbit progresses the tilt reverses the effect from North to South and back in one orbit.
The tiny difference in distance from Earth to Sun of one Pole from the other due to the tilt is so miniscule it is irrelevant. It's the angle of incidence to the Sun's radiation that does the work.
Autumn in which hemisphere?
what dictates the difference of the seasons between the northern & southern hemisphere is the angle of the earth from vertical on it's plane to the sun
the distance between the Earth and Sun varies between (roughly) 91 and 94 million miles on it's elliptical orbit - so, it would average between 92-93 million miles (148-150 million km) - it is difficult to be more accurate than a very rough distance
Imagine a line that passes through both the center of the Earth and the center of the sun. Allow Earth to proceed through a partial orbit, and the line has drawn out a fragment of Earths orbital plane. Fill in the rest of the plane. Imagine another line perpendicular to the orbital plane that passes through the center of the Earth. Allow the new line to trace a line on the orbital plane. This is Earths orbital relationship with our sun.
Night and day are caused by the Earth's rotation on its axis, which has a period of 23 hours 56 minutes 4 seconds. ~12 hours are spent facing the sun, and ~12 hours are spent facing away from the sun. The Earth is tilted off the axis of our orbital plane, which makes Earths Plane of rotation (the equator) tilt off of our orbital plane. Since our plane of rotation is not aligned with our orbital plane, different points on Earth's surface will be facing directly at the sun at the same time every day. You can use the original line we created to determine where the specific spot on the surface of the earth is at any one moment in time.
It takes ~365.26 days for the Earth to make one orbital pass around our sun. During each orbital pass, you can see that the sun appears above the equator during half the orbit, and below the equator for the other half. This is because the Earth's axis of rotation is not perpendicular with our orbital plane. During these periods, one hemisphere is in the winter phase of the orbit while the other hemisphere is in summer phase. Summer drifts above and below the equator every orbit.
There is none. If you are looking for the proportion, then it is very simple. The period of Earths rotation is 1 day. The period of Earths revolution about the sun is about 365 days. So therefore the proportion would be 365:1.
The Earth's axis always points in the same direction, like a gyroscope.
As the Earth revolves around the sun first one pole and then the other will point more closely toward the sun. The hemisphere pointing sunward has summer.
As the earth revolves around the sun, it is tilted at a 23.5degree angle in relation to the sun. Because if the earth's revolution and its tilt, different parts if the earth receive the direct rays of the sun for more hours of the day at certain times in the year. This causes the changing seasons on the earth.
The rotation of the earth could be slower, or it could be faster, and this itself would not have much influence, if any, on the seasons. However, the rotation does make the Earth into a gyroscope. The rotational period is independent of the yearly revolution of earth. However, the yearly revolution of earth in its orbit, its spin and (mostly) its axial tilt, combine to cause the seasons.
Imagine the plane that is formed by the Earth's orbit. The Sun is in this plane. If the plane is extended infinitely into space, a line is formed, called the Ecliptic. It is the path that Earth follows in its orbit, and it is also the path the Sun 'follows' over the course of the year. We can imagine the center of the Earth as a single point on this ecliptic plane. We can also imagine that the poles of the earth are at 90 degree angles with this plane, and the earth spins about, with the earth's equator fitting exactly on the ecliptic plane. The problem is that this is not the way the Earth is moving. Having the equator exactly in the ecliptic plane would represent zero 'tilt' in the axis. The Earth is tilted about 23.4 degrees in relation to the ecliptic. This is why you almost always see globes tilted in their frames, and not pointing straight up.
The rotation of the Earth makes it into a gigantic gyroscope, much like one that you could buy at a toy store, and as such the poles will always [see discussion] be pointing to the same location in space. So imagine that you are looking down from high in the north, and you see the Sun in the center of earth's orbit. As Earth orbits [counter-clockwise] around the sun, the tilt of the poles will remain pointing in the same direction. When you imagine Earth coming back to the point where you first started your space observation, the tilt is still pointing in the same direction.
What you will notice if you practice this mental observation is that for half of the year it is the north pole that is tilted more toward the Sun, and for the other half it is the south pole that is tilted more toward the Sun. And this difference is gradual as the year progresses, because the Earth continues smoothly in its orbit as the poles remain oriented in the same direction.
When the north pole is tilted toward the Sun, it is spring and summer in the north. During the very same times, it is autumn and winter in the south. Then, when the orbit continues and the tilt favors the south, it is time for spring and summer in the south, and for autumn and winter in the north. The part that often amazes northerners is that because of the slightly non-circular orbit of earth, northern winter happens when the earth is closer physically to the sun. It is the tilt that causes the seasons, and not the relative distance to the sun.
23.5 degrees
No. What makes winter cold is the Earths tilt. The Earths "axial tilt" is 23.44 degrees. So, when it is winter, the tilt is away from the sun. when it is summer the tilt is facing the sun. when not facing the sun the tilt makes the days shorter, thus less sunlight and colder.
The same way it affects most of earth. The seasons are caused by the tilt of the earth's axis relative to the plane of its orbit.
The earths tilt at its axis
23.5 degrees.
Yes.
23.5 degrees
Seasons are caused by the positon of the earth along its orbit around the sun AND the tilt of the earth. Summer is caused when the sunlight is more direct in a hemisphere (northern or southern) and causes warmer temperatures. Winter is just the opposite: when sunlight is less direct.
23.5 degrees
23.5 degrees
For a start there would only be 1 season, forever if the Earth's axis was 0 degrees.
23.5 degrees
23.5 degrees
23 degrees
It is about 23.5 degrees
The tilt of the earths axis is constant throughout the year at about 23.5 degrees
About 23 and a half degrees.