Chapter 9.1
To pack closely together, squeezed.
What is this defining?
Compressibility
What is the equation for pressure AND what is the unit for pressure?
Pressure = Force ÷ Area
Pa / Pascals
What did I use to puncture a hole in the plastic bottles?
Swiss Army Knife
Scenario: There are 300 people on the dance floor constantly moving. It is hot, and everyone is sweaty.
What do the people represent as a metaphore?
Gas Particles
Hydraulic System - The Circulatory System
Pump = ____________
Conductor = __________ & __________
Pump = Heart
Conductor = Arteries & Viens
TRUE or FALSE : Solids are more compressible that gas
FALSE
Fred loves skating. He has an equivalent weight that comes to 220N of force. His skies take up 2m². How much pressure is he placing on the ice?
110 Pa
What happens when you remove your finger from the hole in the bottle
The water leaked out of the hole
When heat is being placed on a gas. The particles react by...
Gas particles start moving faster
Define Valves
A mechanism that controls the flow or fluid in a pipe or tube.
What is a Pneumatic System?
A system that uses gas under pressure.
The deeper I go into the ocean, The ___________ pressure is being placed on me.
greater
What force is responsible for pushing the water down inside the bottle?
Gravity / Atmospheric Pressure
An increase in heat leads to gas particles causing an increase in pressure on the walls of the container. What is one example of that happening in real life (think of the video we watched).
Aerosol / Deodorant cans exploding
What keeps blood flowing in one direction in our body?
Viens
Pneumatic and Hydraulic fluid systems consist of 4 parts. They are...
Pump, Conductors, Valves, Pressure Gauge
___________ ______ states that the force applied to a fluid is distributed equally through all parts of the fluid.
Pascals Law
What happens when the bottle cap is screwed on tightly?
The water stops leaking out of the hole
Decrease in Temperature. Gas particles start moving ___________. Causing a __________ pressure on the walls of the container.
Slower, Decrease
When a valve is damaged it means it can not fully close. A damaged vein will lead to blood flowing in the opposite direction and pool, preventing it from going back to the heart. What is this known as?
Varicose Viens
TRUE or FALSE: An hydraulic system is a system that uses liquids under pressure. An example would be a blood pressure cuff.
FALSE
There is an additional force exerted on a unit of surface area. It is 100000 times greater than the pressure cause by the weight alone.This is known as?
Atmospheric Pressure
What role does air pressure play in controlling the flow of water in this experiment? Can use a diagram but must explain.
Air pressure pushes down on the water in the bottle. The external atmospheric pressure is greater than the pressure inside the bottle, which prevents the water from flowing out unless the pressure is equalized or the seal is broken.
A balloon is blown up and then placed in the fridge over night. What will happen to the balloon?
It will burst / It will stay the same / It will shrink
It will shrink
Hydraulics are used in everyday life. What is one example of a hydraulic system?
Cranes, Car Breaks, Roller coasters...