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Weight
The force of gravity acting on an object
Mass
The amount of matter that makes up an object or substance
Volume
The amount of space an object or substance takes up
Density
A measure of the mass per unit volume of a substance
Buoyancy
The upward force created by a fluid that opposes the weight of an object
Positively Buoyant
The buoyant force is strong enough to keep the object above the water level
Negatively Buoyant
The buoyant force is not strong enough to support the object
Neutrally Buoyant
The object neither sinks nor floats
Archimedes Principle
states that the buoyant force is equal to the weight of the displaced water