Mechanism of The Seasons
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Mechanism of The Seasons The seasons result from the Earth's axis being tilted to its orbital plane; it deviates by an angle of approximately 23.5 degrees. Thus, at any given time during summer or winter, one part of the planet is more directly exposed to the rays of the Sun. This exposure alternates as the Earth revolves in its orbit. Therefore, at any given time, regardless of season, the northern and southern hemispheres experience opposite seasons. The effect of axis tilt is observable from the change in day length, and altitude of the Sun at noon (the culmination of the Sun), during a year. Seasonal weather differences between hemispheres are further caused by the elliptical orbit of Earth. Earth reaches perihelion (the point in its orbit closest to the Sun) in January, and it reaches aphelion (farthest point from the Sun) in July. Even though the effect this has on Earth's seasons is minor, it does noticeably soften the northern hemisphere's winters and summers. In the southern hemisphere, the opposite effect is observed. Seasons result from the yearly revolution of the Earth around the Sun and the tilt of the Earth's axis relative to the plane of revolution. In temperate and polar regions, the seasons are marked by changes in the intensity of sunlight that reaches the Earth's surface, variations of which may cause animals to go into hibernation or to migrate, and plants to be dormant. During May, June and July, the northern hemisphere is exposed to more direct sunlight because the hemisphere faces the sun. The same is true of the southern hemisphere in November, December and January. It is the tilt of the Earth that causes the Sun to be higher in the sky during the summer months which increases the solar flux. However, due to seasonal lag, June, July and August are the hottest months in the northern hemisphere and December, January and February are the hottest months in the southern hemisphere.
Comments
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how is it that sunlight does not radiate all around us even over whelmiing the planet from behind the shadow, so at night how can we not see the sun light around our planets shadow at night since the night is only us in the earth shadow so how can we not see this massive sunlight around the shadow at night?
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do people not realize that if the Axis of the earth stays facing the same way all of the time that every 6 months our time should shift by 12 hours????
I.e.- 12pm high noon in summer time in the northern hemisphere would be midnight during winter months as the same 24hr point at which the earth ends, 180 days later would be facing away from the sun... -
does it have German translation or subtitle?
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nice work
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Stan BTS Stan Talent
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The first picture is incorrect, the. Earth's revolution around the sun is a 99.9% a perfect circle
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👏🏽
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but what about the elliptical orbit of earth around the sun...does this affect seasons ?
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like si estas viendo esto porque te obligan
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Total lies!!! Wake up!!! Research the earth is flat and you've been lied to all of your life!!!
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how dose the equator always stay central while the earth is tilted.??
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This diagram is actually wrong. The earth orbits on an elliptical orbit, not a circular orbit.
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Great video! Just one thing that was wrong is than on the summer solstice at the Arctic Circle the length of day is 24 hours, which was said but it was written on the diagram.
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This animation indeed proves just how little credible the idea of a spinning Earth is. All life, humans included, is extremely sensitive to movement, and capable of detecting and analysing anything that moves. If the Earth was spinning, and that fast (1,6 kmph which is similar to speed of an airplane), we would most certainly know it and instantly. When I fly, the clouds stay often still. If that is so, then one could register movement of Earth from a hot air balloon, simply because with zero wind, it would float still just as clouds do. If Earth rotated, then indeed some movement of the ground below a balloon would be perceptible. We know what moves! Movement is visible and perceptible through other senses. When did we accept the invisible or imperceptible movement? The Earth is a huge globe (knows anyone who travelled by a plane) but it isn't spinning at all. No chance. The animation takes only isolated factor and doesn't explain the whole picture. The stars f ex. If the Earth rotated, why would the stars appear immovable? An optical illusion, they would say. The only illusion is deception! We are capable of seeing the truth with our senses; that's the whole point of survival! If we were prone to delusions, we'd be dead.
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great
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Northern Hemisphere bias. Did you know that 21st or 22nd June is the Winter Solstice for the Southern Hemisphere??????
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All Clear Of Storms
Peace With Nature
Heaven N Earth! -
How can a 23.5 degree tilt of the earth from a sun 93 million miles away create seasons?
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For starters, this video is not to scale, this is MAJOR problem when you are dealing with science. Second, you have not explained why, there is a distance discrepancy during winter and summer months (and this an important meteorological phenomena) because distance is greater in summer than in winter from the sun to the earth. This is key to explaining solar altitude and seasonal occurrence. Finally, you have not explained the value differences between the equinoxes, perihelion and aphelion along with the solstices. These events mark particular points within the seasons and are important to their variability.
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90 degrees minus 23.4 gives you 66.6 Sound familiar?
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