Wheel and Axel This machine involves a circular rotating part (wheel) that turns around a shaft (axel). When one part turns, so does the other. Examples include a door knob and car wheels. Gears Wheels with teeth that fit into one another are called gears. As one gear turns so does the other. Gears can…...
Tag: Simple Machines Grade 4
Simple Machines: Levers
A machine is a tool designed to make work easier. Scientists define work as a force acting on an object to move it across a distance. Simple machines can magnify a force, change a force’s direction or increase the speed with which a force is applied. This changes the rate at which work can be…...
Complex Machines
Simple Machines are combined to form complex machines. A minimum of two simple machines together can be considered a complex machine. Complex machines are also referred to as compound machines. The size varies with each complex machine. It can be as small as a mechanical watch or as large as a car. Other examples of…...
Simple Machines
This post is a quiz testing your knowledge on simple machines. Please look over your notes or read your textbook before attempting these questions. Do not use your notes while taking the quiz. If there is anything that you do not understand or would like clarification for do not hesitate to comment! Feel free to…...