we would all obviously die
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The temperature on Earth will become so hot that no living animal, human or plant could survive.
then it would hardly have vegetation and human life would not exist
First, envision the plane formed by the earth's orbit, with the sun at it's centre. If the axis of the earth were perpendicular to that plane (that is, at a 90 degree or right angle), then the length of day in places like New York (in the Northern Hemisphere) or Sao Paolo (in the Southern Hemisphere) would be constant year round. And, the equator would lie in the same plane as the earth's orbit. But, in reality, the axis of the earth is not at a 90 degree angle and the plane in which the equator lies is not the same as the earth's orbit. This has the effect that, as the earth orbits the sun, the length of day changes dramatically throughout the year in places like New York and Sao Paolo. While it is winter and days are short in New York, it is summer and days are longer in Sao Paolo. So, the fact that the earth's axis is not perpendicular to the earth's orbital plane is related to changes in day length and the presence of different seasons of weather.
well u see there would be uhh fire and stuff
no life on earth
If the Earth had no axial tilt, there would be no seasons. Weather would probably be pretty boring.
every thing in the plane will fly out
The Earth orbits the Sun. The plane of the Earth's orbit is called the "ecliptic". The Moon has its own orbit around the Earth, and its own orbital plane. If the plane of the Moon's orbit was the same as the plane of the Earth's orbit, then there WOULD be solar eclipses at every new moon, and lunar eclipses at every full moon. But the plane of the Moon's orbit is NOT the same as the plane of the Earth's orbit - and really, why would they be? The Moon's orbital plane is inclined by about 5 degrees from the ecliptic. Therefore, eclipses only happen at full and new moons about every six months, when the Moon happens to be crossing the ecliptic.
If the Earth's rotational axis were not tilted relative to the plane of the ecliptic, the days and nights would always be equal, and about 12 hours each.
ha ha well nothing would happen because there was no life on earth.
If the plane was in air, it will tip over and most likely crash.
the earth would be destroyed
it would taxi. (drive like a car.)
That would be terribly inconvenient, since the earth is not in that plane. Did you mean to ask: What if the moon earth and sun were all completely in the same plane? In that case there would be a solar eclipse somewhere on the earth at the time of every new moon.
Seasonal changes happen because of the tilt of the Earth's axis, relative to the plane of the ecliptic.
For a solar eclipse, the Moon has to get between Earth and Sun.For a lunar ecipse, the Moon has to get into Earth's shadow.None of these happen every month. This is because Earth, Sun, and Moon are not perfectly aligned (not in the same plane).