Wheel and Axle

Which of the following is a simple machine?

• a calculator

• a car

• a record player

• the string and wheel of a window blind

What is the benefit of a simple machine?

• It allows us to convert motion into electricity

• It prevents us from making careless mistakes

• It uses magnets to move objects

• It allows us to move objects more easily

Tags

NGSS.MS-PS2-2

What is an axle?

• The tire that fits around a wheel

• The rod around which wheels rotate

• a type of inclined plane

• the rope that is strung through a pulley

What is a fulcrum?

• a metal rod that connects two wheels

• a fixed point around which a wheel and axle rotate

• a very large type of wheel and axle

• a device that combines a wheel and axle with an inclined plane

Which of the following statements is true?

• the wheel and axle multiply the force you apply to them

• the wheel and axle lessen the force you apply to them

• the wheel and axle make sure the level of force you apply is consistent

• the wheel and axle require a tremendous amount of force to operate

Tags

NGSS.MS-ETS1-1

Which of these devices uses a wheel and axle?

• a mirror

• a seesaw

• a syringe

• a carousel

Why don´t we just remove the wheel and turn the axle?

• turning the axle directly requires too much effort

• without the wheel, the axle is useless

• the wheel balances out the weight of the axle

• an axle cannot turn on its own

Which answer correctly describes wheel and axle movement?

• the wheel and axle move the same distance and turn with the same amount of force

• the wheel moves a lesser distance than the axle but turns with greater force

• the wheel moves a greater distance than the axle but turns with less force

• the wheel moves, while the axle stays completely still

A wheel and axle is basically just a rotating version of what?

• a lever

• a pulley

• an inclined plane

• an electromagnet

In a doorknob, what part functions as the wheel?

• the knob itself

• the metal rod in the middle

• the fulcrum

• the keyhole