SOLAR SYSTEM

UNIVERSE

SOLAR SYSTEM FORMATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Why the planets are spherical in shape?
A
gravity pulled in the bumps
B
electricity pulled in the bumps
C
nuclear energy pulled in the bumps
D
Earth was always a perfect sphere
Explanation: 

Detailed explanation-1: -A planet is round because of gravity. A planet’s gravity pulls equally from all sides. Gravity pulls from the center to the edges like the spokes of a bicycle wheel. This makes the overall shape of a planet a sphere, which is a three-dimensional circle.

Detailed explanation-2: -Planets have plenty of gravity and are largely liquid or even Gas and so form an even sphere around their gravitational centre, with some adjustment for their spin. Asteroids are much smaller and colder and therefore do not respond well to their own weak gravity.

Detailed explanation-3: -Gravity pulls everything towards the center of a celestial body, allowing planets and stars to form and maintain their spherical shapes.

Detailed explanation-4: -As in most processes in astrophysics, the shape of a star is always determined by gravity, which tends to push everything towards its center. If gravity is symmetrical, like for a single star, it will form an almost perfect sphere, and is only slightly affected by the rotation of the planet and its magnetic field.

Detailed explanation-5: -Why? It all comes down to gravity. All the atoms in an object pull towards a common center of gravity, and they’re resisted outwards by whatever force is holding them apart. The final result could be a sphere… but not always, as we’re about to learn.

There is 1 question to complete.