wunder beta⚙️ Simple Machines
Six clever tools that make hard work easy. Meet the simple machines!
What you’ll learn
- Identify the lever, inclined plane, and wedge and how they make work easier.Simple machines make work easier by changing the force or direction we need. A lever turns on a fulcrum to lift loads, an inclined plane is a ramp that eases lifting, and a wedge pushes or cuts things apart.
- Describe the screw, wheel and axle, and pulley and how machines combine.A screw is an inclined plane wrapped in a spiral, a wheel and axle rolls loads while reducing friction, and a pulley uses a rope to change the direction of a lifting force. Combining simple machines creates compound machines like scissors and bicycles.
Questions this course answers
How many simple machines are there?
There are six simple machines: the lever, inclined plane, wedge, screw, wheel and axle, and pulley.
What is the turning point of a lever called?
A lever rests on a turning point called a fulcrum, which lets it lift heavy loads.
Which of these is an example of an inclined plane?
A ramp is an inclined plane, a slanted surface that makes lifting objects easier.
A screw is basically which simple machine wrapped around a pole?
A screw is an inclined plane wrapped in a spiral around a pole, forming threads.
What does a pulley do to your force when you lift something?
A pulley changes the direction of your force, so pulling down can lift a load up.
What is a machine made of two or more simple machines called?
A compound machine combines two or more simple machines, like scissors or a bicycle.
Grounded in trusted sources
- Encyclopaedia Britannica, "Simple Machine" https://www.britannica.com/technology/simple-machine
- TeachEngineering, "Engineering: Simple Machines" https://www.teachengineering.org/lessons/view/cub_simple_lesson01
- Ducksters, "Simple Machines" https://www.ducksters.com/science/simple_machines.php
- Idaho Agriculture in the Classroom, "Six Kinds Do It All" https://idaho.agclassroom.org/matrix/lessons/337/
Every Wunder lesson is built from real, reputable sources — never invented.
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