Fluids and Pressure

liquid and gas

All matter consist of small particles ( atoms and molecules), that are constantly moving. The amount that they move depending on how much energy they have.

-particles are help tightly together -they vibrate in their fixed position -particles have the lest amount of energy

-particle are fairly close together -move in all directions but movement is limited due to forced of attraction -these particles have slightly more energy, which allows them to slide over each other and therefore allow the liquid to flow.

-particles are free to move in any direction and collide with each other and the walls of a container. This creates pressure on the walls -are free to spread out and take the shape of the container. They have the most energy.

compressible or incompressible

fluids are those whose volume can change.

gases

fluids are those whose volume cannot be changed

liquid

true

air has a mass and is made of particles, it exerts pressure. pressure is a force applied to a surface

P=F/A P= pressure (Pa) F= force measured in Newtons (N) A= surface area (meters squared, m2)

homogenous

the greater the pressure

Honey

the greater the pressure

they move at high speed in a straight line until they bump into something, them bounce off and move in another direction

temperature, number of particles, volume

by increasing the temperature, there would cause more collision which makes the temperature hotter and will increase the pressure

the more particles there is , the greater the number of collision, which increases pressure

because no matter how much you increase the volume of a given space, pressure will never be zero since there will always be some gas particle in the space

rising higher in atmosphere: fewer air particles making the particles spread out from one another (fewer collision).

decreases