One of the first recorded uses of the lever was in ___________

The formula for correctly using the lever is called the __________________________.

In the ________ class lever, the force you have to use is greater than the load that is there, but the effort is a shorter distance than the load’s distance.

One example of a first class lever is bicycle ________________

Some of the objects lifted in ancient times weighed over ______________

The Greek device, the _____________, improved on these levers by adding a sliding weight to the other side to enhance the precision.

If the weight is one meter from the fulcrum, you have to apply force two meters from the fulcrum in the ____________ direction.

The __________ class lever is when the fulcrum is somewhere in between the load, or object, and the effort, or applied force.

One example of a second class lever is a _______ paddle

The lever allows the person using it to use _____ force to move an object

The earliest recording of the lever being used was in the third century B.C. and these were provided by __________________.

To maximize the applied effort people found that placing the fulcrum ____________________ the load was more efficient than any other position on the lever.

In the _________ class lever, the fulcrum is totally to one side, the load is in the middle, and the effort is on the other side.

One example of a third class lever is a _______ rod

Who made this powerpoint?

The word lever, comes from the French, meaning ______________.

To correctly lift what you want to, you have to apply force ___________ the distance between the weight and the fulcrum.

The most common type of lever used is the ________ class lever

One example of a second class lever is a _________ board

The stapler is a ________ class lever

Levers have been used since ancient times for _________________, _____________, and ___________________.

A lever is a simple machine, but can be difficult to use if you do not know the correct positions for the
____________, ______________, and __________________

The _______ class lever is the most common lever in the human body

One example of a third class lever is a human __________

Name 2 examples of levers in this room.