#7. Simple Machines Pulleys & Wheels: Outcome B3 - Andrew Wilson | Biblioteka

1

A wrench is used to turn a nut on a bolt. What is the wheel in this system?

a.) The bolt

b.) The nut

c.) The wrench

d.) The bolt, nut, and wrench

1

A two-pulley system allows you to:

a.) do less work with less effort

b.) do less work with more effort

c.) exert half the force needed to lift a weight

d.) exert twice the force needed to lift a weight

1

An example of a wheel and axle is:

a.) screw

b.) a door knob

c.) car engines

1

A pulley is a simple machine consisting of a grooved wheel on which a rope turns.

Tačno

Netačno

1

When discussing simple machines, what is effort?

a.) a type of simple machine

b.) the force you apply to move an object

c.) what the simple machine is lifting

d.) the point where the lever pivots

1

What is a real-life example of a wheel and axle:

a.) a TV remote

b.) a bicycle

c.) a shoe

d.) a phone

1

What kind of machine is the volume dial on a stereo?

a.) lever

b.) inclined plane

c.) wheel and axle

d.) block and tackle

1

What simple machine makes an elevator work?

a.) lever

b.) screw

c.) pulley

d.) wedge

1

What is NOT a SIGNIFICANT reason a car loses efficiency?

a.) Friction between any two moving parts that are in contact

b.) Heat that is given off by the cooling system or exhaust

c.) Energy being converted to all the sounds your car makes.

d.) Incomplete combustion in the engine