Simple Machines and Their Functions

The video tutorial introduces simple machines and their applications in building a treehouse. It covers inclined planes, wedges, and screws, explaining their functions and providing real-world examples. The tutorial emphasizes how these machines make work easier by altering force and distance. The video concludes with a review of the concepts and encourages further exploration through activities and practice questions.

What is the main purpose of using a pulley in the treehouse project?

• To lift supplies into the tree

• To transport supplies on the ground

• To cut wood for the treehouse

• To hold the treehouse together

How does an inclined plane make work easier?

• By changing the direction of the force

• By spreading the force over a longer distance

• By decreasing the distance over which force is applied

• By increasing the force needed

Which of the following is an example of an inclined plane?

• A screw

• A pulley

• A ramp

• A wheelbarrow

What is a wedge primarily used for?

• To transport objects

• To lift heavy objects

• To hold objects together

• To break objects apart

Which of the following is NOT an example of a wedge?

• Front teeth

• A ramp

• A kitchen knife

• An ax

What is the structure of a screw?

• A cylinder with a wedge wrapped around it

• A cylinder with an inclined plane wrapped around it

• Two inclined planes glued together

• A flat surface raised at one end

Which of the following uses a screw to function?

• A ramp

• A pulley

• A light bulb

• A wedge

How do screws make work easier?

• By increasing the force needed

• By changing the direction of the applied force

• By holding objects apart

• By decreasing the distance over which force is applied

What is the main function of an inclined plane?

• To move loads between different heights

• To hold objects together

• To change the direction of force

• To break objects apart

Which simple machine is used to split things apart more easily?

• Inclined plane

• Wedge

• Screw

• Pulley