KIDS TRIVIA

Detailed explanation-1: -The answer is gravity: an invisible force that pulls objects toward each other. Earth’s gravity is what keeps you on the ground and what makes things fall.

Detailed explanation-2: -The reason gravity pulls you toward the ground is that all objects with mass, like our Earth, actually bend and curve the fabric of the universe, called spacetime. That curvature is what you feel as gravity.

Detailed explanation-3: -gravity is related to the presence of air, or is something in the air, so if there is no air, there is no gravity. (Hence there is no gravity on the moon, in Earth satellites or in space; as one rises above the surface of the Earth gravity lessens because the atmosphere thins) gravity increases with height.

Detailed explanation-4: -Explanation: Normal force always acts perpendicular to the contact surface. It can act counter to gravity or to any other force that pushes an object against a surface. Think of normal force as the force that keeps a surface solid; without normal force, an object would pass right through a surface.