Simple Machines

What type of simple machine is a seesaw an example of?

• screw

• lever

• pulley

• wheel

How does a pulley make work easier?

• By increasing the amount of force required

• By changing the direction of the force applied and providing mechanical advantage.

• By generating heat energy

• By decreasing the distance over which the force is applied

What is the main purpose of a wheel and axle?

• To cook food

• To provide shade

• To generate electricity

• Efficient transfer of rotational motion and torque

Give an example of an inclined plane in everyday life.

• slide

• staircase

• ramp

• escalator

What type of simple machine is a knife an example of?

• Wedge

• Lever

• Screw

• Pulley

How is a screw different from other simple machines?

• A screw is an inclined plane wrapped around a cylinder.

• A screw is a type of lever.

• A screw is a type of pulley.

• A screw is a type of wedge.

Explain how a lever works using a specific example.

• A lever works by pulling both ends in opposite directions to lift objects

• A lever is a type of wheel that rotates to move objects

• A seesaw is a simple example of a lever. When one person pushes down on their end, the other end with the second person goes up, allowing them to play by moving up and down.

• A lever functions by pressing down on one end to make the other end disappear

What is the function of a wedge?

• To provide light in dark spaces

• To cook food evenly

• To separate two objects or portions of an object

• To measure temperature accurately

Describe how a pulley can change the direction of a force.

• A pulley changes the direction of a force by redirecting it.

• A pulley changes the direction of a force by slowing it down.

• A pulley changes the direction of a force by amplifying it.

• A pulley changes the direction of a force by duplicating it.

How does a screw help in holding objects together?

• A screw holds objects together by producing sound

• A screw holds objects together by emitting light

• A screw holds objects together by converting rotational motion into linear motion.

• A screw holds objects together by generating electricity