Simple Machine

A door stop is an example of a

• Screw
• Wedge
• Lever
• Inclined Plane

Name this simple machine. 

• Inclined Plane
• Lever
• Pulley
• Wedge

WHAT CLASS OF LEVER IS A SCISSORS

• 1

• 2

• 3

• 4

What type of lever is shown above?

• 1st class lever

• 2nd class lever

• 3rd class lever

• 4th class lever

THE FIRST CLASS LEVER HAS ________________ IN THE MIDDLE

• FULCRUM

• LOAD

• EFFORT

• ME

Stairs

• wedge
• pulley
• inclined plane
• wheel and axle

Which of these is not part of the lever?

• Object
• Fulcrum
• Load
• Lever

What kind of machine is in the picture?

• lever

• wheel and axle

• screw

• wedge

What part of the lever can be found in the middle of a nut cracker?

• effort

• load

• fulcrum

Machines are used to transform, transfer energy, multiply speed or force, and change the direction of the force.

• True

• False