Physics Unit 5 Pressure

Question	Answer
What is pressure?	Force per unit area.
What is the unit of pressure?	Pascal
What is the equation for pressure?	pressure p= force/ area
can pressure be transmitted through a fluid?	Yes
How does a hydraulic system work?	It uses the pressure in a fluid to exert force.
The force exerted by a hydraulic system depends on the pressure and the area of the cylinder that exerts force. True or false?	True
How does the pressure in a liquid increase?	The pressure in a liquid increases with the depth and of density.
What is the U-tube manometer used for? Image: 4b18332c-b5d1-4ec2-bbd6-965610e2096f (image/png)	To measure gas pressure
What is the mercury barometer used for? Image: 8b0e30d5-1363-43a2-b53e-330fb96d40e6 (image/jpg)	To measure atmospheric pressure.
Describe the arrangement of the molecules in a solid?	Molecules in a solid are in a rigid structure.
Describe the arrangement of the molecules in a liquid?	Molecules in a liquid move about in contact with each other ( loose formation).
Describe the arrangement of the molecules in a gas?	Molecules in a gas are far apart and move about at a high speed.
What happens when you increase the temperature of a gas?	The speed of its molecules increase
What is the pressure of the gas on a surface caused by?	The molecules repeatedly hitting the surface
How does the pressure of a gas increase in a sealed container?	If the gas temperature is increased.
what is the brownian motion?	The eratic

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	Created by Alex Nolan about 9 years ago