Quiz on Simple Machines

What is a machine?

• A device that helps man work more efficiently

• A tool used for cooking

• A type of vehicle

• A form of entertainment

How many types of simple machines are there?

• 4

• 5

• 6

• 7

What do simple machines do?

• Decrease efficiency

• Make work harder

• Make work easier

• Increase complexity

What is a complex machine?

• A machine with no moving parts

• A machine made up of two or more simple machines

• A machine that is difficult to use

• A machine that only increases speed

What is the purpose of a lever?

• To make work harder

• To increase the weight of an object

• To change the direction of a force

• To decrease speed

What are the three main parts of a lever?

• Load, effort, fulcrum

• Force, weight, pivot

• Effort, resistance, load

• Load, speed, direction

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

• Between the load and effort

• At the end of the lever

• At the load

• At the effort

In a second class lever, where is the load located?

• At the effort

• At the fulcrum

• At the end of the lever

• Between the fulcrum and effort

In a third class lever, where is the effort located?

• Between the fulcrum and load

• At the fulcrum

• At the load

• At the end of the lever

What does mechanical advantage tell us?

• The complexity of the machine

• How many times the machine multiplies the effort

• The weight of the machine

• The speed of the machine