Understanding Simple Machines

Who identified the first three simple machines over 2,000 years ago?

• Albert Einstein

• Leonardo da Vinci

• Isaac Newton

• Archimedes

What is the primary function of simple machines?

• To increase the weight of objects

• To make work easier by changing the direction or magnitude of a force

• To create energy

• To reduce the speed of tasks

Which simple machine is described as a bar that rotates around a fixed point?

• Pulley

• Wedge

• Lever

• Screw

What does a Wheel and Axle primarily do?

• Splits objects apart

• Holds objects together

• Lifts objects vertically

• Converts a small force applied at the rim into a larger force at the axle

How does a Pulley make work easier?

• By allowing force to be applied over a longer distance

• By increasing the weight of the load

• By reducing the amount of energy required to do work

• By decreasing the distance force travels

What is an Inclined Plane?

• A device that converts electrical energy into mechanical energy

• A flat surface tilted at an angle to help lift objects

• A machine that uses a rope to lift objects

• A tool for holding objects together

What is the purpose of a Wedge?

• To push objects apart

• To pull objects closer

• To reduce friction

• To change the direction of a force

How does a Screw differ from an Inclined Plane?

• A Screw is an Inclined Plane wrapped around a pole

• A Screw moves objects horizontally, while an Inclined Plane moves them vertically

• There is no difference

• A Screw reduces force, while an Inclined Plane increases it

What is a complex machine?

• A machine that uses electricity to operate

• A machine made by combining two or more simple machines

• A machine that can perform tasks without human intervention

• A machine that is difficult to use

Which of the following is an example of a simple machine in daily life?

• A refrigerator

• A computer

• A staircase

• A light bulb