Flashcards
Physics Unit 5 Pressure
Flashcards do conjunto (16)
- 1What is pressure?Force per unit area.
- 2What is the unit of pressure?Pascal
- 3What is the equation for pressure?pressure p= force/ area
- 4can pressure be transmitted through a fluid?Yes
- 5How does a hydraulic system work?It uses the pressure in a fluid to exert force.
- 6The force exerted by a hydraulic system depends on the pressure and the area of the cylinder that exerts force. True or false?True
- 7How does the pressure in a liquid increase?The pressure in a liquid increases with the depth and of density.
- 8What is the U-tube manometer used for?To measure gas pressure
- 9What is the mercury barometer used for?To measure atmospheric pressure.
- 10Describe the arrangement of the molecules in a solid?Molecules in a solid are in a rigid structure.
- 11Describe the arrangement of the molecules in a liquid?Molecules in a liquid move about in contact with each other ( loose formation).
- 12Describe the arrangement of the molecules in a gas?Molecules in a gas are far apart and move about at a high speed.
- 13What happens when you increase the temperature of a gas?The speed of its molecules increase
- 14What is the pressure of the gas on a surface caused by?The molecules repeatedly hitting the surface
- 15How does the pressure of a gas increase in a sealed container?If the gas temperature is increased.
- 16what is the brownian motion?The eratic
Informações
- Descrição
- IGCSE physics pressure
- Criado por
- Alex Nolan · nov 2015
- Atualizado
- 16 set 2016
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- 26
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