Forces and Simple Machines Review

Match the following terms to the correct Simple Machines

• Wedge

• 
• Pulley

• 
• Wheel & Axle

• 
• Lever

• 
• Inclined Plane

• 

What is a simple machine that consists of a slanted surface to help lift or move objects? (hint - it does NOT move on a fixed point)

• lever

• pulley

• inclined plane

• screw

Which simple machine is made up of two inclined planes joined together?

• screw

• wedge

• lever

• wheel & axle

What is a lever?

• a rope fitted around the rim of a fixed wheel

• two cylinders that turn on the same axis

• two inclined planes

• a stiff bar that moves freely on a fixed point (example: your arm and elbow)

What does a pulley do to applied force?

• Changes the direction of force

• Slows or stops motion

• Pulls objects toward each other

• Measures the speed of an object

If you wanted to slow or stop an object that is moving, you will want

• more friction

• less friction

Which term is defined as 'a measure of the distance an object travels in a certain amount of time'?

• Force

• Friction

• Speed

• Gravity

What is the purpose of simple machines?

• To make work harder

• To look interesting

• To consume energy

• To help people do work by changing a force

What is a screw?

• A type of lever

• A simple machine made up of an inclined plane wrapped around a post

• A type of pulley

• A machine that uses electricity

What is an object’s location called?

• Direction

• Position

• Velocity

• Speed