Quiz on Simple and Complex Machines

What is the main purpose of machines according to the text?

• To increase friction

• To reduce the weight of objects

• To help us do work more quickly, easily, and safely

• To create energy

Which of the following is NOT a type of simple machine mentioned in the text?

• Complex Machine

• Inclined Plane

• Lever

• Wedge

What is a lever defined as in the text?

• A device that uses energy to help you do work

• A machine that can lift heavy things

• A type of complex machine

• A tool with no moving parts

What is the trade-off when using a machine to reduce force?

• You can work faster

• You can lift heavier objects

• You need to use more energy

• You need to apply force over a greater distance

Which simple machine is described as a surface with a slope?

• Pulley

• Inclined Plane

• Screw

• Wedge

What does a pulley do?

• Increases the weight of an object

• Lifts objects using a lever

• Changes the direction of force

• Reduces friction

What is a gear primarily used for?

• To transfer motion or force

• To lift heavy objects

• To hold things together

• To reduce friction

Which of the following is an example of a complex machine?

• Wedge

• Inclined Plane

• Bicycle

• Hammer

What is the function of a wedge?

• To hold things together

• To reduce friction

• To lift heavy objects

• To push things apart

What is the fulcrum in a lever?

• The distance the lever moves

• The force applied to the lever

• The point around which the lever pivots

• The object being lifted