Simple Machines

What is the primary function of a simple machine?

• To change the amount of work done

• To make it easier to perform work

• To create energy

• To reduce the number of machines needed

Do simple machines change the total amount of work done?

• Yes, they increase the total amount of work done

• Yes, they decrease the total amount of work done

• No, they only change the direction of force

• No, they do not change the amount of work done

How many types of simple machines are there?

• Four

• Five

• Six

• Seven

What is the purpose of an inclined plane?

• To make it more difficult to move objects.

• To change the direction of an object's movement.

• To make it easier to raise or lower an object.

• To measure the weight of an object.

What is the purpose of a wedge?

• To make it more difficult to move objects.

• To change the direction of an object's movement.

• To make it easier to raise or lower an object.

• To split objects

What is a wheel and axle?

• A type of vehicle

• A simple machine that consists of a wheel attached to a rod

• A component found only in bicycles

• A tool used for steering

What is the primary use of a wheel and axle?

• To measure distances

• To increase speed

• To lift or move objects

• To store energy

What is a lever?

• A type of machine that uses electricity to operate

• A board or bar that sits on a fixed point called a fulcrum

• A simple tool used for digging

• A device that measures weight

What does a lever pivot or move on?

• An axis

• A fulcrum

• A hinge

• A wheel

What is the purpose of a lever?

• To make it harder to lift objects

• To measure the length of objects

• To make it easier to lift and lower objects and change the direction of a force

• To hold objects together