Force
Yes
Electrical forces cancel each other out over large ditances as charges neutralize each other; gravitational forces accumulate over large distances as mass aggregates.
The gravitational attraction between two masses depends on the product of the masses. If either mass increases, then the product increases, and so does the strength of the forces between them.
Because it's both massive and close by. Newton's law of gravitation states that gravity becomes stronger the more massive the object, and the closer it is.
The gravitational forces between two objects act in both directions along the line between their centers of mass. In our daily experience, where one of the objects is always the Earth, we call one of those directions "down" and, as relates to the forces of gravity, we ignore the other direction completely.
Force
Gravitational Forces
Yes, that is correct.
Electrostatic attraction or repulsion, magnetic attraction or repulsion, gravitational attraction.
Newton's Third Law of Motion states that for every action there is an equal and opposite reaction. Objects do exert force on other objects, but as a result, REACTION forces occur. Each force acts in pairs with each other. There is an action, and a reaction.
There are four fundamental forces in our universe that dictate how matter and energy interact. One of the forces, gravity, causes anything with mass, i.e. anything made of atoms, to attract other massive objects. Gravity is the weakest of the four forces and is one of the most difficult to explain.
electric force
Yes
The Earth exerts the greatest gravitational force on you because it is the most massive object you are closest to. The Earth exerts a force equal to your weight. The other objects exert gravitational forces but are not very noticeable because they are either low in mass or separated from you by great distance.
action and reaction forces
That would be "Gravity".
law of attraction