Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Science Chap. 3
| Question | Answer |
|---|---|
| pressure | force exerted on a surface divided by the total area over which the force is exerted |
| pascal | a unit of pressure Pa: 1 N/m squared = 1 Pa |
| fluid | a material that can easily flow |
| How can the amount of pressure change? | Pressure decreases as area increases |
| How do fluids exert pressure? | All of the forces exerted by the individual particles in a fluid combine to make up the pressure exerted by the fluid |
| How are elevation and atmospheric pressure related? | As your elevation increases, atmospheric pressure decreases |
| How are depth and water pressure related? | Water pressure increases as depth increases |
| barometer | an instrument that measures atmospheric pressure |
| buoyant force | the upward force that water and fluids exert on objects |
| Why do objects feel lighter in fluids? | The buoyant force acts in the opposite to gravity |
| Archimedes' principle | States that the buoyant force acting on a submerged object is equal to the weight of the fluid the object dispaces |
| density | an object's mass per unit volume |
| How can you predict whether an object will sink or float by comparing densities? | The more dense an object is, the less chance it has of floating |
| Pascal's principle | When force is applied to a confined fluid, the change in pressure is transmitted equally to all parts of the fluid |
| hydraulic system | a system the uses liquids to transmit pressure in a confined fluid |
| Bernoulli's principle | States that as the speed of a moving fluid increases, the pressure the fluid exerts decreases |
| lift | an upwards force |
Created by:
ejoshi
Popular Physical Science sets