Physical Science Chapter 14 Lesson 4 Questions

What is the fixed point called around which a lever rotates?

• Axis

• Pivot

• Fulcrum

• Hinge

How are levers classified?

• By the material they are made of

• By the locations of the input force, output force, and fulcrum

• By their color

• By their size

Where is the fulcrum located in a first-class lever?

• At the end of the lever

• Between the input force and the output force

• Next to the input force

• Next to the output force

In a second-class lever, where is the output force located?

• Between the input force and the fulcrum

• At the fulcrum

• At the input force

• Beyond the fulcrum

Which of the following best describes a lever?

• A simple machine that consists of a bar that pivots at a fixed point

• A device that only increases speed

• A tool that only decreases force

• A machine that does not require a fulcrum

In a third-class lever, how does the output distance compare to the input distance?

• The output distance is smaller

• The output distance is equal

• The output distance is larger

• The output distance is negligible

What is greater in a broom when used as a lever, the output distance or the input distance?

• Output distance

• Input distance

• Both are equal

• Neither, they are unrelated

In the context of levers, what does the term "fulcrum" refer to?

• The point where the lever pivots

• The force applied to the lever

• The distance moved by the lever

• The weight lifted by the lever

Which of the following best describes the function of a lever?

• To increase the speed of an object

• To change the direction of a force

• To increase the distance over which a force acts

• To decrease the weight of an object

What is the role of input force in a lever system?

• It is the force exerted by the lever

• It is the force applied to the lever

• It is the force that resists motion

• It is the force that balances the lever