The mass of an object doesn't always depend on its size. It can depend on both size and density.
Density is the mass per unit volume of an object, meaning it is how much one unit of an object's volume weighs. What determines that weight is how close together the atoms of that substance is. For example: a metal cube has a higher density than the cork of a bottle; even though they are the same size, their weight is different.
Increasing the mass of either object increases the mutual gravitational forceof attraction between them. Increasing both of their masses like really reallyincreases the force.
No. An object of just about any size can orbit at any distance.
Heat(Hot) makes a object expand or get bigger. Cold makes a object shrink or get smaller.
is an objects density the measure of the amount of matter in the object compared to known masses
The bigger the object is the more mass it has.
Of course objects have mass because Mass is any object that has weight.
Gravity attracts all mass, period. More massive objects have higher gravity, but even low masses will attract.
No, eyes do not make objects smaller. The image of an object on the retina is smaller than the object itself.
The masses of both objects, and the distance.
Mass b > mass a
The smaller objects which are built to represent the larger objects are called Model
Yes. All objects that have mass are affected by gravity and the gravitational force varies with the masses of the objects.