Which statement best explains why objects are pulled toward Earth’s center?

Question

Earth has a magnetic force that is strongest at its core.
Earth has a much greater mass than objects on its surface.
The weight of the atmosphere pushes objects toward Earth's surface.
The strength of the Sun’s gravity pushes down on objects at Earth's surface.

Answer 1

The statement that best explains why objects are pulled toward Earth’s center is:

Earth has a much greater mass than objects on its surface.

This is because the force of gravity between two objects depends on their masses and the distance between them, as described by Newton's law of universal gravitation. Since Earth has a significantly greater mass than objects on its surface, it exerts a strong gravitational pull that attracts them toward its center.