Fluid Mechanics

The SI unit of pressure is the

• joule (J).

• millibar (mb).

• pascal (Pa).

• newton (N).

Fluid pressure is not affected by the

• depth in the fluid.

• mass of the fluid’s particles.

• density of the fluid.

• volume of the fluid.

As you decrease the area on which a given force acts, the pressure exerted

• increases

• decreases.

• does not change.

• may or may not change.

Objects immersed in water seem to ___

• weigh more than they do in air.

• weigh less than they do in air.

• weigh the same as they do in air.

• have inconsequential weight.

What kind of instrument measures air pressure?

• an aneroidometer

• a barometer

• a hydrometer

• a thermometer

Which of the following are derived units of pressure?

• m/s²

• N/m²

• J/kg•°C

• kg•m/s²

Which of the following sciences deals with the forces acting on airplanes?

• hydraulics

• aerodynamics

• pneumatics

• hydrodynamics

Fluid pressure is generally exerted _______ within a fluid.

• in one direction

• in all directions

• up and down

• left and right

Water pressure increases with depth mainly because water density increases

• True

• False

Two differently shaped containers of water have the same pressure at the same depth.

• True

• False