Science -forces, fluids, density exam view

name the three common states of matter and explain each using the particle theory.

Solid gas liquid (provide photos)

what happens when you add heat particles?

Adding heat makes Particles move in vibrate, faster, decreasing density, resulting in a state of matter change.

define volume.

Measurement of how much space An object takes up

define mass

Amount of matter (Number of atoms) In an object

define density

Mass of an object compared to a given volume

define buoyancy

An upward force exerted by a fluid that exposes the weight of an immersed object.

define viscosity

A liquid internal resistance, or friction keeping it from flowing

define pressure

An amount of force applied to a particular area

define compressibility

The abilities become more compact one squeezed

how to calculate density of fluids with the correct units

mass divided by volume

does temperature change density?

heat decreases density

what are two ways to test viscosity

Bubble test-How long it takes an air bubble to rise through a tube with fluid the longer it takes for the bubble to travel the higher the viscosity

Ramp test-How long it takes to fluid to flow down a ramp the longer it takes the higher the viscosity

how to calculate buoyant force

Subtract weight of an object in the air from the weight of an object in the Liquid.

For example, if a 10 N steel ball only weighs 4 N in water. What is the point force? The buoyant force would be 6 N because 10 - 4 = 6

pascal’s law

when pressure is applied to a contained liquid that pressure force are transmitted in all directions without losing any force

use particle theory to explain why gas is compressed

Gas compresses because it has distance between particles

do solids and liquids compress

No liquids and solids do not compress

explain the difference between a hydraulic and pneumatic fluid system. Provide Examples

hydraulic- used water

ex. Circulatory system, Car lift

Pneumatic- uses gas/air

ex. lungs airbag

are the key factor that should be considered when building Boat

….. don’t know yet …..