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What is the reason for Earth's tilt sideways to the sun and hours of daylight and darkness in both hemispheres on about March 20?
Wiki User
∙ 12y ago
Part A) The tilt was caused by the combined momentum of all the fragments that came together to form the Earth. The most significant of which was probably the collision of the large planetoid that formed the moon.
Part B) 12 hours each, due to the fact that the Earth's axis is aligned with its orbit on the equinoxes.
The earth's axis is never aligned with the earth's orbit. It is inclined at about 67 degrees to the plane of the orbit, and this never changes.
The earth's axis has to point somewhere, and it happens to point towards some insignificant star which everybody therefore calls the pole star. This direction of the axis of spin does not change significantly over anyone's lifetime. At the equinoxes (= equal day and night) in March and September), this axis of the earth's spin lies exactly at right-angles to the line from sun to earth (the sun appears to be on the horizon all day at both poles, for the whole day). As the earth spins on those particular days, everywhere not at the poles sees the sun for exactly 12 hours.
Wiki User
∙ 12y ago
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What causes the periods of daylight and darkness to vary at different latitudes throughout the year?
earths tilt
What is produced by this uneven heating of earths hemispheres?
wind
How does the til of earths axis cause the seasons?
The tilt controls the angle of incidence of sunlight AND the duration of daylight hours.
International Date Line The term for the boundary between night and daylight on the Earths surface is?
The International Date Line is where the date changes, not the boundary between night and day. There is no name for that boundary, because it always moves.
Explain the sequence of events that cause the movement of the plates on the earths surface use these terms core heat mantle flow rise sideways drag cools sinks?
Magma gets heated, rises, flows horizontally (the plate over it moves with it, but not as fast as the magma), cools and sinks.
Why is earths tilt sideways to the sun andhours of daylight and darkness the same in both hemispheres on about March 20?
It is spring
What causes the periods of daylight and darkness to vary at different latitudes throughout the year?
earths tilt
What can be observed by earths rotation on its axis?
The passage of the sun across the sky during daylight, and the stars circling round the axis during darkness.
What are the earths 2 hemispheres?
North and South
Why does the equator go sideways?
The tilt of earths axis makes the equator appear to be sideways.
Why is water cooler near earths poles?
because they are different parts of the earths hemispheres.
Which continent has land in each of the earths hemispheres?
Africa has.
What is produced by this uneven heating of earths hemispheres?
wind
What are the daylight hours of Saturn vs earths daylight hours?
11 hours
Where is most of Earths land mass?
The north and eastern hemispheres
What is caused by earths rotation?
Earth's rotation causes many things. Probably the most obvious is the cycle of daylight and darkness. Another is the rotation of high- and low-pressure weather systems.
Which phenomenon occurs when the Sun crosses the plane of Earths equator?
The Equinoxes - Autumnal and Vernal (or Spring). The hours of daylight equal the hours of darkness.
