Because of gravity first of all. Secondly it's all you have ever known so your used to it. And the Earth isn't revolving slowly, it just looks that way cause the Earth is so big. The Earth rotates at 1,000 Mph and it revolves around the sun at 67,000 Mph.
Advanced Answer:
The rotation of the Earth about its axis (where axis just means the straight line between the North and South poles) it is quite easy to figure out how fast any part of the Earth's surface is moving.
The Earth rotates once in a few minutes under a day (23 hours 56 minutes 04. 09053 seconds). This is called the sidereal period (which means the period relative to stars). The sidereal period is not exactly equal to a day because by the time the Earth has rotated once, it has also moved a little in its orbit around the Sun, so it has to keep rotating for about another 4 minutes before the Sun seems to be back in the same place in the sky that it was in exactly a day before.
An object on the Earth's equator will travel once around the Earth's circumference (40,075.036 kilometers) each sidereal day. So if you divide that distance by the time taken, you will get the speed. An object at one of the poles has hardly any speed due to the Earth's rotation. (A spot on a rod one centimeter in circumference for example, stuck vertically in the ice exactly at a pole would have a speed of one centimeter per day!). The speed due to rotation at any other point on the Earth can be calculated by multiplying the speed at the equator by the cosine of the latitude of the point. (If you are not familiar with cosines, I wouldn't worry about that now, but if you can find a pocket calculator which has a cosine button you might like to try taking the cosine of your own latitude and multiplying that by the rotation speed at the equator to get your own current speed due to rotation!).
The Earth is doing a lot more than rotating, although that is certainly the motion we notice most, because day follows night as a result. We also orbit the Sun once a year. The circumference of the Earth's orbit is about 940 million kilometers, so if you divide that by the hours in a year you will get our orbital speed in kilometers per hour. We are also moving with the Sun around the center of our galaxy and moving with our galaxy as it drifts through intergalactic space!
2006-08-19 06:49:51
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answer #1
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answered by Anonymous
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The Earth is ~25,000 miles in circumference and revolves once a day, so it is revolving approximately 1,000 mph on the surface. That doesn't sound slow to me. It has to do with relativity, that since gravity holds us to the surface, we revolve at the same rate. Imagine throwing a baseball on an airplane. On the plane it might appear to travel with a velocity of say 75 mph, but to an observer on the ground (assuming they could see the event) the baseball might appear to be traveling with a velocity of, say, 550 mph. Motion becomes perceptible only to those idle or moving in another direction.
2006-08-19 06:49:00
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answer #2
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answered by randyken 6
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Because the air and everything else is revolving along with us. Just like when you're up high in an airplane, you don't feel as if you are moving, because the seats and air and everything in there is moving right along with you.
2006-08-19 06:39:53
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answer #3
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answered by yahoohoo 6
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It's revolving really slow
2006-08-19 06:36:43
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answer #4
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answered by nosblankman 2
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It's revolving really slow.
2006-08-19 06:33:26
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answer #5
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answered by Anonymous
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Its revolving too slowly.
2006-08-19 06:36:40
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answer #6
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answered by Anonymous
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It is called "frame of reference".
If everything around you is also moving at the same velocity you perceive your environment as still.
Its all relative you know.
;)
2006-08-19 10:02:13
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answer #7
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answered by Kirk M 4
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this old world keeps spinning 'round...it's a wonder tall trees aren't laying down....must be the gravity, baby
2006-08-19 06:40:11
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answer #8
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answered by Anonymous
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because you were being influenced by it before you were even born and it has been constant, so you don't notice it.
2006-08-19 10:46:24
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answer #9
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answered by idiot detector 6
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gravity
2006-08-19 06:33:21
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answer #10
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answered by Anonymous
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