Chapter 3 Notecards

What is the formula for pressure?

Force/Area

What are the units for pressure? (Not the guys name)

N/M²

At higher elevations the air pressure is _________________ compared to the air pressure at lower elevations

Lower

An object under water feels lighter than it does in air because of

Buoyancy

Pressure spreading equally to all parts of a confined fluid is an

example of __________ principle

Pascal’s

If an object is dropped into a beaker full of fluid and sinks. What can you say about that objects density?

The objects density is greater than the fluid

If fast moving air passes between two balloons, the balloons will……

Move together

The air moves more quickly against the curved top edge of aircraft wing compared to the bottom edge. This

causes the plane to

Rise (Increase Elevation)

Bubbles rise in soda because

The bubbles are less dense than the soda

Pumps such as your heart work because of ____________principle

Pascal’s

A device that increase force due to pressure is called a _______

device. Ex. Brakes

Hydraulic

Mass per unit volume is the definition for this term

Density

The faster that a fluid is moving past the object, the _________the

pressure will be

Less

The pressure exerted by the gas in the Earth’s atmosphere is called

Air or Atmospheric Pressure

A fluid is a substance whose _________can easily change

Shape

Water pressure _________ with depth

increase

Buoyant force always works in this direction

Upward

The weight of displaced fluid = the buoyant force of an object is _______________ principle

Archimedes' principle