1. What is the formula for Pressure? Pressure (P) =
2. What is the unit for pressure? The unit for Pressure is N/m2 OR pascal (Pa)
3. What is the formula for area? The formula for area is - Area = length x width
4. Summarize the paragraph on Pressure and the Particle Theory. Page 166
Particles are constantly moving in solids, liquids and gases.
Particles move quickly if they have a great deal of energy and move slowly if they have less energy.
When particles move there is a chance they will bump into other particles, moving apart once they collide, and leaving empty space between them.
Moving particles exert a force in the direction of their motion. Fluids that are standing in a container are still exerting energy as they are moving in all directions at all times. Most forces cancel each other out but the ones that don’t are exerted against the wall of the container causing pressure.
If a crack occurs in a container the fluid flows out. This proves that the pressure of a fluid is exerted equally in all directions.
5. According to the particle theory, the amount of empty space between particles depends on two factors:
1. The physical state of the substance (whether the substance is a solid, liquid, or gas)
2. The amount of energy that the particles have.
6. What is compressibility?
Compressibility is the ability to be squeezed into a smaller volume.
7. What does incompressible mean?
Incompressibility means unable to be compressed into a smaller volume.
8. What is transmitted?
Transmitted means to be passed along.
9. Summarize the paragraph on Under Pressure. Page 170
When gas particles are put under a great deal of pressure they will expand as soon as they get out as they have a lot of energy.
If the gas manages to get out they do so with a great deal of force.
The force can be used for many things such as to push or move objects.
The compressibility of gases is useful for storing gases in a…