1.1.2 - Simple Machines: The Six Types

What is a simple machine?

• A complex device that performs multiple tasks.

• A device or tool with a simple mechanism to help perform work by changing the direction and amount of force.

• A machine that requires electricity to operate.

• A tool used only for lifting heavy objects.

How many basic simple machines are there?

• 3

• 5

• 6

• 8

What are the main components of a wheel and axle?

• A lever and a fulcrum.

• A wheel and a cord.

• A round disk and a rod.

• An inclined plane and a wedge.

Which of the following is an example of a wheel and axle?

• Elevator

• Doorknob

• Wheelchair ramp

• Axe

What are the two main components of a pulley?

• A wheel and an axle.

• A wheel and a cord.

• A lever and a fulcrum.

• A ramp and a chain.

What is the primary use of an inclined plane?

• To split objects into pieces.

• To convert rotational motion into linear motion.

• To lift heavy objects by placing them on one side.

• To move heavy objects through a sloping surface.

What is a key characteristic of a wedge?

• It is composed of a wheel and a cord.

• It is a triangular-shaped object, thick on one end and sharp on the other.

• It converts rotational motion into linear motion.

• It consists of a bar that sits on top of a fulcrum.

What is the mechanism by which a screw operates?

• It uses a fulcrum to amplify force.

• It splits objects by applying force.

• It converts rotational motion into linear motion.

• It transfers force from one disk to another.

In a first-class lever, where is the fulcrum located?

• Between the force and the object.

• Between the object and the force.

• At the end of the lever, opposite the force.

• It is not present in a first-class lever.

Which of the following is an example of a third-class lever?

• Wheelbarrow

• Pliers

• Fishing rod

• Stapler