Identifying Simple Machines

What is the primary function of any type of machine?

• To generate electricity

• To make work easier

• To consume fuel

• To create complex mechanisms

What are the three essential parts of a lever?

• Wheel, axle, and pulley

• Fulcrum, effort, and load

• Shaft, thread, and tip

• Base, ramp, and force

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What defines a compound pulley?

• It is a single grooved wheel with a rope

• It combines a fixed pulley and a movable pulley

• It is used to change the direction of force only

• It is a pulley system with only one pulley

How is a screw described in terms of simple machines?

• A type of lever with a rotating handle

• An inclined plane wrapped around a cylindrical post

• A wedge used for holding objects together

• A wheel and axle system that transmits force