Studied by 115 peoplepressure
the force per unit area that is applied over a surface of an object
fluid
a substance that has no definite shape and can flow; examples: water and ai
buoyant force
an upward force that is exerted by a fluid on any object in the fluid
Bernoulli's Principle
when the speed of a fluid increases, the pressure exerted by the fluid decreases
higher velocity=
lower pressure
Pascal's Principle
when a force is applied to a fluid in a closed container, the pressure in the fluid increases everywhere by the same amount
Archemedes Principle
the buoyant force on an object is equal to the weight of the fluid it displaces.
kinetic energy
the energy an object has due to its motion
potential energy
the stored energy an object has because of its position or state
conservation of energy
a law of physics that states that the energy cannot be created or destroyed
mass and height
What two factors determine how much PE an object has?
thermal energy
the energy contained within a system due to the motion of the particles
insulator
will not let heat in or out
heat
thermal energy from hot to cold
mass
the measurement of how much matter is in an object
evaporation
happens when a liquid turns into gas
condensation
the process by which gas becomes a liquid
sublimation
when a solid becomes a gas without turning into a liquid first
temperature
the average kinetic energy
density = mass/volume
density formula
pressure = force/area
pressure formula
examples or radiant energy
campfire, microwaves, radio waves
example of thermal energy
a cup of hot coffee
example of mechanical energy
car on a hill, windmill rotating
example of electrical energy
charging a phone, turning on a light
example of geothermal energy
steam on the ground, volcanoes
example of renewable energy
solar energy
example or non-renewable energy
natural gas
example of hydropower
hydraulic system
example or chemical energy
batteries, petroleum
conduction
The transfer of thermal energy between materials by the collisions of particles
convection
the transfer of thermal energy by the movement of particles from one part of a material to another
radiation
The transfer of thermal energy from one material to another by electromagnetic waves
example or conduction
- heating a pan on a stove
- ice melting in your hand
- hot air rising from above a fire
- ice melting
examples of convection
- Hands over a fire
- Sun heating up inside of your car
examples of radiation
- rigid
- has a fixed shape
- has a fixed volume
properties of a solid
- not rigid
- no fixed shape
- fixed volume
properties of a liquid
- not rigid
- no fixed shape
- no fixed volume
properties of a gas
air pressure drops
What happens to pressure when you increase in altitude?
air pressure increases
What happens to pressure when you decrease in altitude?
Note
Flashcard