Lesson 8

• Nask
• Middelbare school
• havo, vwo
• Leerjaar 2

Pressure in gasses

This lesson

• Pressure in gasses
  
• Worksheet pressure
  
• Working independently
  

Learning goals

• Be able to calculate pressure, force and area in hydraulic systems.

• Explain the difference between pressure in gas and pressure in liquids in your own words.

• Explain the relationship between pressure, volume and temperature.

Pressure in gasses

• Liquids are incompressible 
  
• Gasses are compressible
  

Pressure in gas can change a lot

What three factors influence the pressure in a gas?

• Amount of gas
• Volume
• Temperature

The ideal gas law

P⋅V=n⋅R⋅T

The relationship between

• Volume
  
• Temprature
  
• Pressure
  

(in a gas)

Current Tasks

• Read 8.5 and 8.6
  
• 8.5 Workbook exercises
• 8.6 Workbook exercises

Hydraulics

In a hydraulic jack a force of 20 Newton is applied to a piston with an area of 0.20 m2. The area of the other piston is 2.0 m2. 

 

a) What is the pressure transmitted through the liquid?

b) What is the force applied to the other piston?

Learning goals

• Be able to calculate pressure, force and area in hydraulic systems.

• Explain the difference between pressure in gas and pressure in liquids in your own words.

• Explain the relationship between pressure, volume and temperature.