Levers & Simple Machines

What class lever does this picture show?

• 1st

• 2nd

• 3rd

What class lever does this picture show?

• 1st

• 2nd

• 3rd

What class lever is an oar?

• 1st

• 2nd

• 3rd

Which class of lever is this?

• Third Class

• First Class

• Second Class

The force that occurs when one object or surface rubs against another is called __________________

• Force

• Friction

• Machine

• Load

The support around which a lever turns is called the _____________

• Work

• Machine

• Fulcrum

• Load

This is the object that needs to be lifted

• Resistance

• Load

• Force

• Fulcrum

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What type of lever

• First Class Lever

• Second Class Lever

• Third Class Lever

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What class lever does this picture show?

• 1st

• 2nd

• 3rd

A real-life example of a first class lever would be:

• 
• 
• 

Answer explanation

A pair of scissors has:

- the fulcrum in the middle (the screw that keeps both scissors together)

- the load on one side (the handles)

- the effort on the opposite side (the sharp ends of the scissors)

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2