Buoyancy and Density

Flashcards covering key concepts related to buoyancy, weight, density, and the functioning of various objects in fluids.

Buoyancy

The upward supportive force on an object in a fluid.

Weight

The force of gravity acting on an object.

Fluid Displacement

The amount of fluid that an object displaces when submerged, which is equal to the buoyant force.

Swim Bladder

A controllable, balloon-like chamber in fish that helps them alter their buoyancy.

Density

The amount of matter per unit volume of a substance, affecting whether it sinks or floats.

Plimsoll Line

Markings on a ship that indicate the safe waterline for floating in different types of water.

Mass

The amount of matter in an object which does not change regardless of location.

Volume

The amount of space an object occupies, measured in cubic units.

Hydrometer

An instrument that measures the buoyancy of liquids, floating at different levels based on the liquid's density.

Ballast Tanks

Chambers in submarines that can be filled with air or water to control buoyancy and depth.

Gravity