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Density and Buoyancy

QuestionAnswer
What happens to the density of a substance when you add more substance? The density stays the same, because to change the density you would need to change the volume, but make the mass stay the same.
What is buoyancy? Buoyancy is the upward force that can make something float in a liquid
How does weight affect buoyancy? Weight affects buoyancy, because weight is the downward force and buoyancy is the upward force.
Archimedes Principle The relationship between buoyancy and displaced fluid: The buoyant force is equal to the weight of the fluid displaced by an object
Boyle's Law At a constant temperature, the volume of a given quantity of gas is inversely proportional to the pressure upon the gas.
Displaced Term applied ton fluid that moved out of the way when an object is placed in the fluid. A complete submerged object displaces a volume of fluid equal to its own volume.
Equilibrium A state of balance, e.g. the state of a body on which no net force acts.
Fluid Anything that flows; any liquid or gas.
Force An influence that tends to accelerate an object; a push or a pull; force=mass x acceleration (F=ma:Newton's 2nd law), measured in Newton's (N)
Mass A measure of the quantity of matter in a body; a measure of the inertia of an object; the amount of stuff in an object.
Neutrally buoyant A state in which the forces of gravity and buoyancy are in equilibrium or balanced. (object floating)
Pressure The force per unit of surface area; exerted perpendicular to the surface;measured in Pascals.
Principle of flotation A floating object displaces a quantity of fluid of weight equal to its own weight.
Created by: AndreaMock
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