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10 answers

This question is not comprehensible. Besides Earth doesn't rotate around itself, it rotates around it's axis and revolves around the sun. But that doesn't change the given orientations like north South and so on ...

2006-12-11 22:55:06 · answer #1 · answered by jhstha 4 · 0 1

The earth rotates on it axis, not around itself. North and South are determined by the polarity of the earths magnetic field. True north differs from magnetic north due to the fact that the magnetic field isn't exactly in line with the earths rotational axis. Now for east and west, these aren't naturally occurring phenomenon. To aid in navigation ancient mariners arbitrarily setup a line running form north pole to south pole and called it the prime meridian, it runs though Greenwich England and divides East and West.

The reason they don't change is these directions are determined by physical points on the earth itself, so as the earth rotates so do these points. Applying relative motion as long as the earth and these fixed points are rotating at the same speed the net change observed from the earth is zero.

2006-12-12 04:55:10 · answer #2 · answered by Brian K² 6 · 0 0

The earth rotates from west to east about its own axis. The imaginary points at which this axis intersects the surface of the eart are the poles of the earth- North pole and South pole(refered to as true or geographic poles).
Directions are in reference to these poles.
As long as the axis of rotation does not change the poles will not change. So directions will remain unaffected. This ir true reference.
reference directions are sometimes with respect to magnetic poles ( remember how a bar magnet always points to N and S when suspended) These magnetic (points on the earths surface) poles are not coincident with the geographic poles, but the difference is negligible.

2006-12-12 16:50:46 · answer #3 · answered by sweet tooth 2 · 0 0

lets assume u are traveling in a car at 50 km per hour, then even you are traveling at the same speed, but you feel you are at rest. similarly we don't realize the earth's rotation physically, though we experience the change in day and night due to it's rotation. Hence we can say that the directions which we have defined(the N,E,W,S were defined by humans) also rotates at the same speed. hence for an observer from outside say moon everything seems to move in synchronization and hence our directions don't get screwed up with the rotation of the earth

2006-12-12 20:10:00 · answer #4 · answered by Eshwar 3 · 0 0

Because ,as we know, we all are attatched with the earth due to gravitational force of attraction. So when the earth moves about its axis,we all move with it.Hence,it's just a matter of relativity that the south,north,east and west do not change for us.

2006-12-11 23:27:54 · answer #5 · answered by Anonymous · 1 0

earth rotates around its own axis that is the reason why the directions north,west,east n south does'nt change.

2006-12-12 20:56:45 · answer #6 · answered by subbu 2 · 0 0

Sorry to Gary B, yet your spacecraft isn't the element of reference for instructions (different than for stuff precise interior the spacecraft or interior some meters of it). on the element of Earth, we nonetheless have north/south, east/west, up/down. That works incredibly properly for spacecraft and satellites in close to-earth orbits. previous approximately 40,000 km or so, we use an XYZ equipment based on earth. Z is in the comparable direction because of the fact the north axis of the Earth, X is in direction of the vernal equinox element, and Y is at precise angles to X and Y. greater than a number of situations, we use a XYZ equipment even for close to-earth orbits. as quickly as a spacecraft is far off from the Earth-Moon equipment, a pair of million.5 million km, we nonetheless use the XYZ equipment, yet now we center it on the middle of the image voltaic equipment. examine greater approximately it at this link. And by employing the way - - - gyroscopes have a "flow". meaning that they slowly flow far off from pointing of their preliminary direction, so they ought to be re-calibrated each few hours. that's why spacecraft have solar and famous guy or woman sensors, so that they could decide which way are the XYZ instructions.

2016-12-18 11:53:39 · answer #7 · answered by nichelle 3 · 0 0

The directions have been defined with respect to the latitudes and longitudes on the earth and the direction of earth's rotation and revolution. Since all these things do not change so even the directions do not change. In the universe there is no fix direction. We have made directions for our convinience.

2006-12-11 23:32:27 · answer #8 · answered by Angel 2 · 0 1

the directions north, south, east and west, all have implied relationships. for example, if you are north of Lake Ontario, south of Newmarket, east of Mississauga and west of Ajax, then you are in Toronto
you are never just north, you are north of somewhere
these directions apply to locale on earth only, once you get into space, there have to be new directions; north, south, east and west won't cut it because the planets move and change postions too quickly for such directions to be relevant

2006-12-11 22:57:48 · answer #9 · answered by soobee 4 · 1 1

due to sun

2006-12-11 23:00:44 · answer #10 · answered by Anonymous · 0 1

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