What things affect the shape of the earth?

Answer 1

1.Sun's gravitational force due which it revolves around the Sun.

2.Earth's gravitational force which keep its Rotation/wobble around it's own axis.

3.Interplanetary and natural satellites gravitational forces which keeps the motion of universe in round shape as earth.

:)

Answer 2

The main thing is gravity which makes the Earth more or less spherical.

The Earth has a small "bulge" at the equator because of its rotation.

I suppose this question might be about what things affect the shape

of the Earth's surface.

In that case it's things such as tectonic plate movement, volcanic activity,

wind and water, etc.

I'm not too good at this, but I will try my hardest to explain.

Many forces act as the earth spins and orbits our sun, but closer in the moon orbits the earth. The earth not only pulls on the moon, but the moon pulls on the earth slightly, water is affected more as it flows and this is how tide changes are usually caused.

Then there is the spin of the earth, the spin of earth is perfect, but any faster and it would cause a sort of an oval shape due to the centrifugal forces acting on the planet.

If you get a small sphere and polish it as smooth as you can, if you enlarge it to the scale of earth, the ball you polished would have hills and trenches as deep and high 20 to 40 meters, and this done with diamond polish.

Oh, and if a meteor or asteroid strikes, this could change that part of earth.

Did you know that when China finished building its dam, water level rose and the earth gained time by (if I remember correctly) 0.00002 seconds.