Gravity:
* Universal Force: Gravity is a fundamental force that exists between any two objects with mass. It's always attractive, meaning objects with mass pull on each other.
* Dependent on Mass and Distance: The strength of gravity depends on the mass of the objects involved and the distance between their centers. Larger masses and closer distances lead to stronger gravitational forces.
* Always Present: Gravity is always acting on all objects, even if you don't feel it directly. It's what keeps your feet on the ground and the Moon orbiting the Earth.
* Weak but Long-Ranged: Gravity is the weakest of the fundamental forces, but its influence extends over vast distances (like the entire universe).
Pushing and Pulling:
* Contact Forces: These forces require direct contact between objects. You push or pull on something by applying a direct force to it.
* Dependant on the Force Applied: The strength of a push or pull depends entirely on how hard you are pushing or pulling.
* Limited Range: These forces only act on objects you are directly in contact with.
* Can Be Repulsive or Attractive: You can push an object away (repulsion) or pull it towards you (attraction).
Key Differences:
* Origin: Gravity is a fundamental force of nature, while pushing and pulling are forces you actively create.
* Range: Gravity acts over long distances, while pushing and pulling require direct contact.
* Direction: Gravity is always attractive, while pushing and pulling can be attractive or repulsive.
Example:
* Gravity: The Earth pulls you down towards its center, keeping you on the ground.
* Pushing: You push a box across the floor, applying a force that causes it to move.
In Summary: Gravity is a constant force of attraction between objects, while pushing and pulling are contact forces that you create and control.