Levers

What is the point where the lever arm pivots?

• load

• fulcrum

• mass

• effort

How do bones contribute to body movement?

• By storing inorganic materials
• Through blood cell formation
• Acting as levers in a lever system
• Providing a structural framework

An example of a first class lever in the human body is:

• Standing on your toes

• Elbow joint

• The skull flexing and extending

• A cartwheel

In a simple machine, what is the effort?

• the force needed to move the load

• the distance the load travels

• the mass lifted by a system

• the object being moved

How many types of levers are there?

• 1
• 2
• 3
• 4

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

• At one end

• In the middle

• At the load

• At the effort

In a class three lever, where is the effort applied?

• At one end

• In the middle

• At the fulcrum

• At the load

What class lever does this picture show?

• 1st

• 2nd

• 3rd

• 1st Class

• 2nd Class

• 3rd Class

In the human body, this acts as the fulcrum.

• Bones

• Joints

• Muscles

• Tendons