as earth is round in shape, why dosent the people standing on the opposite side walk up side down?
457303
Imagine a beach ball with two ladybugs on it, at opposite sides.  Hold your imaginary ball in front of you with one bug at the top and one at the bottom.  It does in fact appear that one bug is upside down to you.  Now hold the ball upside down.  You can't, because it is round, though the location of the bugs gives you an appearance of "upside down".  Taking the same application where Earth is now the beach ball and we are the ladybugs, gravity holds us to the Earth standing upright.  The apearance of "upside down" would occur if you could view a cut away, but you know now that you cannot turn the earth upside down in reality because of it's shape.
52855
It has to do with the direction the earth rotates on its axis. It rotates once every 24 hours. So, the direction it spins is the direction the sun passes by. The earth would have to completely stop and start to rotate in the opposite direction in order for the sun to rise in the west and set in the east. Hopefully that won't happen any time soon, because it would probably mess gravity all up.
124798
This has to do with the way the earth was formed. Dust particles gathering together and spinning at the same time. Spinning causes things to take spherical shape due to centrifugal force.
364601
If that direction were opposite the direction of the \nearth's rotation, I think the answer is theoretically yes.\nIn reality there's not enough mass of people relative to the mass of the earth to have any effect.
465388
The Earth is round for the same reason that things don't fall off it.  Gravity is a force in the universe that attracts all forms of matter equally, this means that pieces of matter will eventually move together and form clumps, if this is happening from every direction then the most likely shape it will form is a sphere.\n\nThis gravitational attraction is pretty small.  However, the Earth is pretty big, so the combined effect of all that gravity is just enough to keep your feet firmly planted on the surface :)\n\nThere are a few other related effects that come into play, such as centrifugal force, which keeps everything spinning and moving.
770633
There is no "anti-clockwise" in the universe.  If you look at anything rotating from the other side, it goes the other way.
223759
Because gravity always points down, no matter\nwhere you are, down is towards the center of\nthe earth.
1069004
For the most part, the atmosphere moves along with the surface of the earth. On the other hand, winds going in any direction tend to grind down mountain peaks.\n\nHowever, if the Earth were not fairly close to round, then the molten lava inside the earth would rupture the crust and deform the earth into a round shape. The main reason the Earth is round is gravity, not wind.
57491
because of gravity, pulling inward with the same force in all directions, giving them a round shape.\n\nyou look very pretty in your avatar by the way ;)
169921
shosh is correct. Cause they are! The pull of gravity comes from the earth. Don't get hung up on UP and DOWN. There is no UP or DOWN... What is UP? Why would you assume that you are UP and I am DOWN? Or vise versa? There is no UP or DOWN. We have just chosen north as up as a convenience. You could hold a map in any direction or a globe at any angle it doesn't matter. We just have tried to standardize our thinking. We are working with a 1000 year old model that doesn't take into account what we know today.
825744
I think you meant to say that the people were running forward, not in place.  If they were running in place, nothing changes.\n\nOtherwise, assuming that an average person has a mass of 70kg.  That means that all the people have a combined mass of about 70*6.4*10^9 = 448*10^9 kg.  The earths mass is approximately 6*10^24 kg.  That means that all of the peoples mass is only 0.00000000000007466667 of the earths mass.  Using the conservation of angular momentum with:\nm = moment of inertia of people\nM= moment of inertia of earth\nw_1 = angular velocity of earth with people standing still\nw_p = angular velocity of FORWARD running people\nw_e = angular velocity of earth while people are running \n\nw_1*(m+M) = w_e*M + w_p*m\n\nso by the conservation of angular momentum you can see that you would effect the rotation of earth.  However m compared to M is essentially zero, as mentioned before (mass is in a way related to ineria) so setting m = 0, you get:\n\nw_1*(m+M) = w_e*M + w_p*m\nw_1M = w_e*M\nw_1 = w_e\n\nThe effect that this would have is practically none so no you will not change the direction but, yes you do slow the earth down a tiny, tiny, minuscule amount.
35969
The Earth rotates (spins around).  Sometimes a side is facing the Sun and is in daytime.  Sometimes it is not and is in nighttime.
9991
To a first-order approximation the Earth is round.  This\nis due to gravity.  Gravity pulls with equal strength in all\ndirections; therefore any variations from a spherical\nshape will lead to gravitational forces that\nbring the shape back into that of a sphere.\n \nThis is without considering the rotation of the earth,\nhowever.  The rotation of the earth adds centrifugal\neffects, which cause the earth to bulge slightly at\nits equator and flatten slightly at its poles.\n(This is like twirling a rock on the end of a string\nand then letting go--the rock flies away from the\ntwirler.)  Because of these centrifugal effects, the\ndistance from the center of the earth to the surface\nof the earth is about 0.33% shorter at the poles\ncompared to the equator.
799943
because the earth is tilted
520200
assumeing that one leg wasnt longer than the other, and that you couldnt fly and just walk straight out into space, you WOULDNT end up back where you started if walking in a straight line, because the earth isnt perfectly round...  you would have to walk east-west on the equator only
988242
well, its not exactly round, its spherical. but yeah, since you can only see it from one side at a time, if you saw it from space it would appear round. kinda like how the sun appears to us. it looks like its moving, but its not, WE ARE. lol.
235240
There is no sunlight in the center of the earth.With all that gravity it must be hard for you to stand up,eh?