Simple Machines Uncovered: Exploring Their Types And Functions

The video tutorial introduces simple machines, defining them as tools that help perform work by changing force direction and amount. It covers six basic types: wheel and axle, pulley, inclined plane, wedge, screw, and lever, explaining each with examples. The lever section details three classes based on the arrangement of force, fulcrum, and object. The tutorial concludes with a summary, emphasizing the ease of learning with Earthspan.

What is the primary function of a simple machine?

• To create energy

• To reduce the size of objects

• To change the direction and amount of force

• To increase the speed of work

Which of the following is an example of a wheel and axle?

• Elevator

• Knife

• Seesaw

• Pizza cutter

What component does a pulley use to carry a cord?

• A screw

• A wedge

• A wheel

• A lever

Which simple machine is also known as a ramp?

• Screw

• Wedge

• Inclined plane

• Pulley

What is the primary use of a wedge?

• To hold objects together

• To rotate objects

• To split things into pieces

• To lift objects

How does a screw convert motion?

• From linear to rotational

• From rotational to linear

• From horizontal to vertical

• From vertical to horizontal

Which of the following is an example of a screw?

• Axe

• Fishing rod

• Faucet

• Wheelbarrow

In a first-class lever, where is the fulcrum located?

• Next to the object

• At the end of the lever

• Next to the force

• Between the force and the object

Which of the following is an example of a second-class lever?

• Seesaw

• Fishing rod

• Door

• Scissor

In a third-class lever, where is the force applied?

• At the fulcrum

• Between the fulcrum and the object

• At the object

• At the end of the lever