Forces in Fluids

This is the name of the force that tries to push an aircraft up.

• Thrust
• Weight
• Drag
• Lift

Faster air movement over an airfoil creates a _________ pressure field, which in turn allows lift.

• Higher
• Lower

This force slows a plane down.  It is caused by air friction on the plane.

• lift
• thrust
• weight
• drag

This force is a measure of gravity which wants to pull the plane down towards the earth.

• drag
• lift
• weight
• thrust

Pressure is measured in 

• Pascals
• Newtons
• Meters squared
• Pounds per cubic meter

Force divided by area is 

• Pressure
• Buoyant force
• Hydraulic multiplication
• Fluid

Bernoulli's principle creates ___ in airplanes

• Drag
• Lift
• Weight
• Friction

The force that causes forward movement of a flying plane is called

• lift.
• thrust.
• weight.
• drag.

At higher elevations, air pressure is 

• less because there is less air above
• greater because there is more air below
• less because gravity is stronger
• less because the air is moving faster

When pressure is applied to a confined fluid, the increase in pressure is transmitted equally to all parts of the fluid.

• Pascal's principle
• Newton's principle
• Archimedes' principle
• Bernoulli's principle