8th Grade Ch. 4 Review

In a hydraulic system, the force exerted on the small piston is _______________ the force exerted on the large piston.

• greater than

• less than

• the same as

What is the formula for DENSITY?

• P=F/A

• D=F/A

• D=M/V

Buoyant forces act on objects in ___________

• solids

• plasma

• only liquids

• Fluids

According to Archimedes’ principle, the buoyant force on an object is equal to the (a)   of the fluid that the object displaces.

What are the 3 factors that determine the amount of drag force on an object.

• speed

• density of surrounding fluid

• volume

• surface area

Buoyant forces on objects are in the _________ direction.

• downward

• left

• upward

• right

A hydraulic system is used to:

• increase volume

• decrease pressure

• increase pressure

• increase length

Which principle is this? Pressure in a fluid is exerted equally in all directions

• Archimedes'

• Pascal's

• Bernoulli's

• Boyle's

Which principle does an airplane wing demonstrate?

• Pascal's

• Bernoulli's

• Howard's

• Archimedes'

Pressure applied by a fluid ________________ with depth.

• decreases

• increases