Why is the globe round?

Answer 1

Answer

The earth (and other planets) are spherical because the force of gravity organized them and they took this form as a preference. When very large masses of material accrete to form something the size of a planet, gravity increases and increases as the material comes together. The mass begins to "pack itself tighter" through the process, and as the arrangement increases in size, the "most effective shape" for the forces acting on the material will dictate that the material form a sphere.

Planets formed in this way have their constituient material heated up by mechanical energy imparted to the material as it accretes. The amount of energy added to the "mix" is almost always sufficient to cause the whole "ball" to become molten. That results in a really, really big ball of liquid rock. And liquid rock is plastic - it can be shaped easily. Gravity does this, and the optimum shape for the conditions - a sphere - will be the result.

Note that the planets usually form in such a way that they are spinning on an axis. The plastic nature of the large mass of the planet and the rotation of the mass couple to "deform" the body a little bit. This gives most planets (earth included) a little bit of a "bulge" at the equator, or, said another way, planets often exhibit a slight flattening at the poles.

Answer 2

The Earth is represented as a sphere because it almost is (gravity and centrifugal forces make it bulge slightly). Scientists now know that, as opposed to a while ago when everybody thought it was flat. Maps and globes have many different types/representations of the earth, but the all try to get the size and proportions accurate, and to model the earth as a sphere as best as possible, though this can be hard to do on 2 dimensional maps.

Answer 3

When earth was in gaseous state it was spherical like today's sun. Slowly it became liquid. As a drop of water tend to be spherical, earth would have been spherical or oblong. Shape would have been changing according the moon and other planets gravitational pull. Slowly it cooled to solid state from outer side. It would have almost spherical at that time. It was covered with water all over. Water had percolated in the soil, due to gravitational pull. As water percolated deeper and deeper, it got hotter and hotter. It's turning into vapor would have been prevented by high pressure of the crust of surface. When water became extreemly hot, it turned into vapor. This lead to earthquakes at various places, leading to formation of volcanoes. These in turn lead to formation of mountains and deep vallies. This process might have been reapeated several times, before final stucture of today is there. Even on today, this may be the cause of earthquakes. Once water settled in vallies it formed the oceans. And probably you have the shape of earth as on today.

Answer 4

Please note that it is not EXACTLY spherical, but stating that it is spherical is a good approximation. Basically, Earth - and other planets - are approximately spherical due to gravity, which pulls them together.

Answer 5

A flat Earth model is scientifically and logically unsound. There would be too many flaws in this concept.

10 Easy Ways You Can Tell The Earth is not Flat

Answer 6

A globe is round as it shows the model of the Earth.