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The seasons are a result of the fact that the Earth orbits the Sun once every year and the fact that the Earth's axis of spin in inclined 23 degrees to the plane of the Earths orbit of the sun.
The tilt means that once year the north and south polar regions are tilted towards the sun (causing the Northern and Southern summers and winters) and for one day in spring and autumn the Sun to be overhead at the equator.
Days are therefore shortest during a winter season, longest during the summers season and equal in spring and autumn.
For areas of the Earth within the tropics, the variation between the seasons is less marked than further towards the poles. One will normally see the seasons expressed in times of heavier rainfall twice a year and a slight variation in temperature. If you concentrate on the temperature you will only mark 2 seasons a year but if you mark the rainfall you should have 4 seasons, 2 wet and two dry.
The four seasons are caused by the tilt of the Earth's axis as it orbits the sun. This tilt causes different parts of the Earth to receive more or less sunlight throughout the year, leading to changes in temperature and weather patterns.
The tilt of the Earth's AXIS is the most important reason why seasons occur. We have hot summers and cold winters because of the tilt of the Earth's axis. The tilt of the Earth means the Earth will lean towards the Sun (Summer) or lean away from the Sun (Winter) 6 months later.
The earth orbits the sun, completing one orbit every (approx) 365.25 days. But whilst it spins on its North-South axis (causing day and night) it also tilts slightly, causing the North Pole to 'lean' towards the sun for part of it's orbit, then the South Pole for the other part. This has the effect of giving more concentrated sunlight on the hemisphere which is tilted towards the Sun.
During Winter in the Northern Hemisphere, because the North Pole is leaning away from the sun, the sun itself appears to be very low in the sky (about 13 degrees, in mid winter, in the mid UK - 53 degrees latitude,) whereas in mid summer, the sun appears high in the sky (approx 60 degrees at the same latitude,) giving a far longer day and a shorter night. The effect (i.e. the difference between summer and winter) becomes more pronounced, the nearer one gets to the poles. In mid summer, at the North Pole, because it is leaning towards the sun, the sun never sets, and there exists, for a few weeks, 24 hour daylight. At the South pole at that time, 24 hour darkness prevails. Therefore the further North, or South one travels, away from the equator, the more pronounced the seasons become.
Conversley at the equator, there is no perceptible difference in daylight/night times, nor summer and winter (from the perspective of sunlight.) In Singapore, for instance, (quite near the equator) there is only about 8 minutes difference in day/night times, from June to December. In effect (barring the effect of weather systems) they have no seasons, 12 hour days and 12 hour nights the whole year round.
Around March and September, (the Equinoxes) neither pole 'leans' towards the sun, and the days and nights are of more or less equal length. This is Spring and Autumn.
It has nothing to do with the distance from the Earth to the sun, as some people believe. On midsummer day 2012 for instance, the Sun will be 4.86 million km more distant than it was on 21st of December 2011 (mid winter,) because the Earth's orbit is slightly eliptical. But it will still be a lot warmer (we hope!) than it was in December.
the tilt of the earth around the sun
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What are four types of season?
The four types of seasons are spring, summer, fall, and winter. These seasons are characterized by different weather patterns, temperatures, and day lengths throughout the year.
What is the difference between seasons and climate?
Seasons refer to the four divisions of the year based on weather patterns and daylight hours (spring, summer, fall, winter), while climate describes the long-term average weather conditions in a region. Seasons are temporary and change regularly, while climate is the overall pattern over a longer period of time.
How the four season forms?
The four seasons are caused by the tilt of Earth's axis as it orbits the sun. During different times of the year, different parts of the Earth receive more or less direct sunlight, creating the variations in temperature and weather that we experience as the seasons change.
Rebus puzzle sprinG summEr autumN winTer answer?
The answer to the rebus puzzle is "Seasons." This is because the first letter of each word in "sprinG summEr autumN winTer" spells out the word "Seasons", which represents the four seasons of the year.
How often do seasons occur?
ANSWER:Seasons occur every three months. Spring, summer, fall and winter. There are some places on the Earth that doesn't have a change of seasons, like Antarctica or the deserts.
1 year seasons?
There is a total of four seasons in every year. They are winter, spring, summer, and autumn.
What does a four seasons attire mean?
Answer Four season attire means that you have to dress, for winter, spring, summer and fall. The four seasons that are present every year.
Has a leap year always occurred and will it always every four years in the future?
Yes it will always occur every four years due to the revolution of the earth and the seasons. Every year must be divisible by four hundred to keep us on track with the season.
Is four an adverb?
No, four is a noun.Actually, cardinal numbers (like four) are adjectives,describing "how many." Sample sentence: There are four seasons in every year: spring, summer, autumn, and winter.
Why there are four season in other country?
because weather is the same in every country.... it just happens at different times of the year
When do seasons occur?
four times a year
Why wasn't it a leap year?
2012 is a leap year. Leap years fall once every four years to keep our calendar years in sync with the seasons.
How many seasons in 100 years?
If you have four seasons in a year, then there will be 400 in 100 years.
What is 4 S in a Y?
Four Seasons in a Year
What is one of four in a year?
A season, because there are 4 seasons in one year, or a quarter; also four in one year.
How long is 4 seasons in basketball?
Four years of course... A season has twelve months that means one year... So Four Seasons = Four Years...
What is the yearlong elliptical orbit around the sun?
The Earth goes round the Sun in an elliptical orbit, once every year, and this produces the four seasons.
