Forces in Fluids Review

The achievement of lifting a rocket off the ground and into space can be explained by...

• Newton's 1st law

• Newton's 2nd law

• Newton's 3rd law

Tags

NGSS.HS-PS2-1

A unit of pressure is called a...

• pascal

• bernoulli

• pound

• meter

Given that the air pressure outside your body is so great, why aren't you crushed?

• inertia changes the pressure before it comes into contact with you

• pressure inside your body balances the air pressure outside your body

• Earth's gravity cancels out the air pressure

• Human skin is extremely strong

Which type of substance does Pascal's principle deal with?

• gasses

• powders

• fluids

• solids

One application of Pascal's principle is....

• the flight of an airplane

• a hydraulic car lift

• a speedboat's bottom slapping against the waves

• the buoyancy shown by ducks and other waterfowl

What does a hydraulic system do?

• reduces inertia

• increases velocity

• multiply force

• decrease pressure

Which of the following is true of the buoyant force?

• it acts in the downward direction

• it acts with the force of gravity

• it acts in the upward direction

• it makes an object feel heavier

Pressure can be measured in units of...

• newtons per square centimeter

• newtons

• newtons per centimeter

• newtons per cubic centimeter

Which of these substances is the LEAST dense?

• rubber

• mercury

• copper

• wood

Which of these multiplies a force by transmitting it to a large surface area?

• a hydraulic system

• a buoyant force

• a balanced pressure

• a force pump