how the earth is rotating around its axis?
820360
Very well, thank you.\n\nsee: http://www.agu.org/reference/gephys/24_dickey.pdf
463527
There is rotation-the spinning of Earth on its axis\nAnd:\nThere is revolution-The orbiting of Earth around the sun
419674
The Earth is approximately 25,000 miles in diameter at the equator, and it spins once in about 24 hours.  So, at the equator, the Earth is spinning about 1000 miles per hour.  However, if you live in the US, the Earth is moving much slower-about 70% the speed depending on your exact latitude-and slower as you go north or south from the equator.
433949
The Earth is rotating at about 1040 mph (~1670 kph) at the equator. The speed decreases relative to your distance to the (axial) poles, where it is effectively 0. \n\nTo find out the rotational speed where you live, simply multiply the equatorial rotation speed above by the cosine of your latitude.
356220
Depends on your point of view. If you're hovering above the North pole, the earth rotates counter-clockwise. If you're hovering above the South pole, it rotates clockwise.
659353
The Earth rotates counter-clockwise when viewed from above the North Pole. \n\nThe rotation causes a centrifugal force, which causes the bulge of the equator, and a coriolis force, which is important in determining the flow of jet streams in the atmosphere and currents in the ocean.
515806
The earth rotates on its axis (spins) the same way as the sun does on its axis, since the planets all formed out of the proto-solar disc when the sun was forming.  All of the planets spin the same way, EXCEPT for Venus, which rotates (very slowly, once every 243 days) in the opposite direction.  Some planetary scientists consider this evidence that Venus at one time collided with another large body early in its lifetime, which caused the retrograde rotation.
463369
Speed of Earth's rotation at the equator is 0.46 km/s.\nSpeed of Earth's revolution around the sun varies from 29.29 to 30.29 km/s because of it's elliptical orbit.\nThe speed of the Sun's rotation at the equator is 2.0 km/s.
455077
The actual shape of the Earth today is an OBLATE SPHEROID. It's a kind of sphere but flatter on two opposite sides. These sides are found at the poles.\n\nThe reason why the world is shaped like so is because of the the Earth's rotation. This spinning occured from the time of the Earth's formation up to this day. Centrifugal force tends to throw more matter in its equator than its poles.
479647
the tilt of the earth and when it revolves around the sun
864302
I'll assume it is your typical physics problem, which states some highly simplified conditions to demonstrate some physics principal and not a real engineering or natural science problem. We will assume the Earth increases its radius by 30 meters without any change in total mass, and that the Earth is a sphere of uniform density. In that case, the rotation rate would be proportional to the change in the moment of inertia of the Earth, I. For a uniform sphere I=2/5MR^2. You need to calculate the existing I and the new I after the radius change. Since M does not change, and we want only the ratio of the two Is, we can ignore the 2/5M and just compare radius. The radius of the Earth is about 6,370km or 6,370,000 meters. Adding  30 meters makes it 6,370,030 meters and the ratio of 6,730,030^2/6,730,000^2 is about 1.00001. That is about a 0.001% change, and about 0.001% of 24 hours is about 0.8 seconds. \n\nAs an angular momentum problem it is neat, but as a real life Earth problem it is totally bogus. There are all sorts of complications, like the sea only covers 70% of the Earth, the density of water is less than the average density of the Earth, the ice that melted started out far above sea level in many cases, and so on.
450708
I guess it's time someone writes down a correct answer...\n\nThe earth rotate on its axis, which runs through the north and south poles.  It so happens that the earth's axis is not perfectly vertical.  Because the axis is at an angle, we spend half the year (it changes during the equinox) with the north pole (and hence the northern hemisphere) tilted towards the sun - this is summer.  We spend the other half of the year with the south pole tilted towards the sun (hence, the northern hemisphere is tilted away from the sun) - this is the winter.  Now I will leave it up to you to think about why this should make the summer days longer than the winter days.  Try this:  grab a basketball (better yet, a globe), turn off all the lights, point a flashlight at it and spin it with the axis rotated towards the light and with the axis rotated away from the light.  Follow a single point on the top half of the ball and see if you can make sense why this point stays in the light longer when the axis is pointed towards the light versus when the axis is pointed away from the light... \n\nIt's a nice point to make that in the southern hemisphere (Australia, Chile, South Africa, etc.) the days are longer in the winter and shorter in the summer.  If you think for a moment, it shouldn't be too hard to figure out why...
651108
We know that the Earth is 360 degrees(as the Earth is a sphere). Now the Earth takes about 24 hrs to complete a rotation or 360 degrees. Therefore in 1 hour, it will travel 15 degrees. But some times countries are so small that they don't even occupy 15 degree area. So its half - 7.5 degrees is taken into consideration. The main purpose of taking all this trouble is to make the calculation of time easier.
122865
The gravitational pull of the earth pulls the waves up and down while the earth is rotating.
619864
If you were to view the Earth from above the North Pole, it will be rotating in an anticlockwise direction (i.e. West to East).\n\nEarth rotates about an axis, where 1 rotation equates to 24 hours (1 day). This axis is at a tilt of 23.45 degrees from the vertical. This tilting results in the seasons.\n\nA cool "video" can be found on: http://www.ncsu.edu/scivis/lessons/earthinspace3d/earth2.html
64853
First of all the world is not round it is an oblique sphereoid (basically a double ended pear shape.)\n\nThe force of gravity generated by the molten core of the planet acts in all directions equally at any one point in the planet.  This attracted the material from space that formed earth following the Big Bang.  This would form a spherical object.\n\nThe rotation of the planet complicates thia as the equator is rotating faster than parts of the Earth that are further away from the equator, the poles rotate the slowest.  This disparity causes greater centripidal forces to be experienced at the equator than at the poles so the earth bulges out at the centre.
20798
The Earth spins from west to east at about 900 mph. Looking from above the Earth's North Pole, the Earth rotates counter-clockwise around the Sun.