Pressure

• Pressure is defined as the amount of force applied per unit area.
• SI unit for pressure: Pascal (Pa)
• Collisions of molecules (gas or liquid) on a surface produce pressure
• Why are snowshoes useful for walking in the snow?

  It increase the area of when you normally walk so it decreases the force applied onto the snow overall the pressure applied decreased.
• High pressure occurs with a large force but a small area
• Low pressure occurs with a small force but a large area