Show:
Putting the Squeeze on Fluids.
Effects of External Pressure on Fluids.
Relationships: Pressure, Volume, and Temprature.
Fluids in everyday life
Throwback Thursday
100

What states of matter are considered fluids?

Liquid and gas

100
A force applied to a fluid is distributed equally through all parts of the fluid.
What is Pascal's Law ?
100

What happens to the temperature of a gas when you increase pressure?

Temperature increases

100

How does a power washer work?

Motor generates a lot of pressure on water; water is sprayed with increased pressure (VERY high flow rate)

100

What is the full name of the guy who made Pascal's Law?

Blaise Pascal

200

What is a hydraulic system?

A system that uses incompressible fluids (usually liquid) and pressure to move.

200

What is the formula to calculate pressure ?

(P) = (F) divided by (A)

200

What happens to volume of a gas when you increase pressure?

Volume decreases

200

How does a starfish move?

Starfish pull in water through a sieve, then apply pressure to push the liquids out to its feet (Pascal's Law).

200

What are fluids?

Fluids are gases or liquids that flow and take the shape of their container

300

What is compressibility?

How easy it is to compress a fluid (apply pressure and make the volume smaller)

300

How many Pascals are in one kPa?

1000 (kilopascal)

300

Pressure Decreases Temprature Decreases; what happens to volume?

Volume increases


300

How do hydraulic car brakes work?

Apply pressure to hydraulic system with pedal; pressure is uniformly distributed along tubes connected to the car brakes; pressure squeezes disc inside the wheels and the car stops.

300

Define density.

Density is the amount of mass per unit volume, or how tightly packed an object's molecules are.

Formula = Mass / Volume

400

Why are gases easier to compress than liquids?

Gases are easier to compress because they have more space between the particles to start off with.

400

Why do your ears want to pop when you dive to the bottom of the deep end in a pool?

The water pressure is greater at the bottom of the pool, and the pressure inside you is not as much

400

What is pressure caused by (looking at particles)

Collision (bumping) of particles into the walls of the container

400
Large motors take in air from the atmosphere, and then release the air with great force.
How does a hovercraft operate ?
400

Why does an object float?

Its density is less than water, and/or the buoyant force on the object is greater than its gravitational force

500

Name two examples of hydraulic systems.

Car brakes, hydraulic lift

500
A person is not able to expell the carbon dioxide a far enough distance from their lungs, and therefore is not able to inhale deep breathes.
When swimming along the waters surface, explain why a swimmer is not able to breathe when the snorkle is extended a further distance ?
500

How are volume, temprature, and pressure connected?

When one changes, usually the other two change as well

500

How is Pascal's Law related to breathing?

When you use your diaphragm, the muscles push on your lungs, forcing air out. When it goes the other way, the muscles expand your lungs, making air go in.
500

Who did Ms. Tien confuse Pascal with?

Louis Pasteur, the guy that invented pasteurization