TOPIC 6 Flashcards
what is buoyancy
is the tendancy of a substance to float
how do objects float
the fluid pushes back against the force of gravity causing it to float.
force is measured in
newtons
what is the buoyant force
is the upward force of a fluid
a gas can exert a buoyant force causing another gas to
float
a liquid can exert a buoyant force making objects to
float
what is a hydrometer
is a device that uses buoyancy to measure density directly
the higher the hydrometer floats the higher the…
density of the liquid
the more concentrated the solutions the more _____ it is
dense
density depends on the concertation of the solution true or false
true
ships can float because of what
they contain large volume of air. and the overall density of the ship is less dense that water so it floats
what is the archimedes principle
the buoyancy force acting on an object equals the weight of the fluid displaced by the object
what id archimedes discover
he discovered how to find the volume of an irregular object. He discovered it while taking a bath
An object immersed in a fluid such as water does not rise or sink if the…
the amount of force pulling down (gravity) equals the amount of force pushing up (buoyancy)
what is neutral buoyancy
is when gravity equals buoyancy
