The primitive earth was very smooth, why is the current earth s surface uneven?

I think it's because if you're in the universe, you're bound to be hit by something, after all, there are meteorites floating in space, so they're going to be bumpy.

The Earth was created long ago when rocks in the solar system collided with each other to form planets. From the beginning of its formation until the present, the earth has been mainly composed of liquid rocks. In space, where gravity is minimal, liquid matter will automatically form a spherical shape.

This has been demonstrated by experiments conducted by astronauts in the space environment with substances such as water, fruit juice and liquid metal. The Earth is a huge liquid sphere at a considerable distance from the Sun, which gradually forms a circle as it moves through space. Asteroids and small stars such as the moons of Mars are so weak in their gravitational pull that they cannot form a circle once they form a solid star.

Due to the large size of the Earth, its gravitational pull is strong enough to make itself circular. If there is no tectonic plate movement that makes the peaks taller, gravity will make the Earth become more and more round. If you still don't understand, let's take a step back:

Imagine if the Earth were square, tetrahedral, or some other irregular object, what would it look like? The first thing that comes to mind is that there will be a lot of mountains on the earth (don't say I'm kidding you) and then the earth will rotate irregularly (why?). You think, it's not round, it's uneven, it's unbalanced! And then it will be more susceptible to impacts, and the winds in the universe will not be merciful, so what will happen?He's going to be smoothed, polished, and rounded, and so that in the end it's still round.

Because the primitive land was divided into seven plates, in the process of movement, constantly squeezing each other, the current uneven surface of the earth was formed.

Because when the earth's crust moves, it will cause the plates to squeeze each other, which will form mountains and rivers, coupled with man-made modification, natural weathering will lead to the unevenness of the earth's surface.

That's because at the beginning, the earth only had oceans and no land, and later experienced a series of volcanic eruptions, plate collisions, etc., forming a series of geological features such as land and mountains. So now the earth looks uneven.

Of course it's bumpy. There are mountains, seas, canyons, and basins.

The earth is pear-shaped, you can look it up.

First of all, the earth is approximately spherical, and the surface is curved.

Moreover, due to the centrifugal force generated by the rotation of the earth, the motion and squeeze between the earth's plates, and even the impact of cosmic celestial bodies, the earth's surface is uneven.

The earth's surface is so uneven because the earth's crust is squeezed in some parts of the earth's crust during the rotation of the earth. During the extrusion process of the earth's crust, it is relatively easy to fracture, and mountains will be formed when the two sides of the fracture rise or fall relative to each other. For example, the Himalayas are formed in this way, and it is still rising, and it is also formed by interstellar collisions.

Surface movement, internal movement, etc.

The earth's surface is (undulating) and rugged.

The shape of the earth's surface is diverse, so it is undulating and rugged. There are mainly (plateau), (mountain), (plain), (hill), (basin), (water surface), etc.