Question

Why are all planets almost spherical in shape?

Because a planet's gravity pulls equally from all sides
Because large bodies in space break apart due to gravity
Because gravity pulls all material towards the edge of a planet
Because rotation pushes outwards the material inside the planet

Answer 1

The primary reason why all planets are almost spherical in shape is:

**Because a planet's gravity pulls equally from all sides.**

This gravitational force acts towards the center of the planet from all directions, causing the material to distribute evenly around the center, which results in a spherical shape. Larger celestial bodies like planets and stars reach hydrostatic equilibrium, where their gravity is sufficient to overcome the rigidity of their material and pull them into a round shape.

The other options provided don't correctly represent the primary reason for the spherical nature of planets:
- Large bodies in space do not break apart due to gravity; rather, gravity holds them together.
- Gravity pulls material toward the center of a planet, not specifically towards the edge.
- While rotation can slightly affect the shape of a planet (causing it to be an oblate spheroid rather than a perfect sphere), it is not the primary reason for their overall spherical shape.