Magnets, Electromagnets, & Motors

Photon

DAY 3 Magnets, Electromagnets, & Motors

10 Minutes      Show what you know

A.    What is a magnet?

B.    Why are some things magnetic and others not?

C.    What is an electromagnet?

D.    What is a motor?

E.     How can you change the direction a motor spins?

F.     How can you increase the speed a motor spins? 


10 Minutes    Big questions for discussion or reflection: What is the relationship between 

                      electricity and magnetism?  

15 Minutes    Hands-on Learning Activity: Use a magnet to pick up paperclips

15 Minutes    Discussion/ written review

                      What happens when you put the magnet next to another magnet?  

                      What is a magnetic field?  

30 Minutes    Hands-on Learning Activity: Build an electro-magnet

15 Minutes    Discussion/ written review

                      When electricity runs through a wire what does it produce?

                      How can we intensify a magnetic field?

                      Why is it important that magnet wire have very thin insulation?

                      What happens to the electro-magnet when it is in use?

15 Minutes    Hands-on Learning Activity: Dissect a motor

5 Minutes      Discussion/ written review

                      What are the parts of a motor?

                      What does each part do? 

45 Minutes    Hands-on Learning Activity: Build a motor     

15 Minutes    Discussion/ written review

                      How does a motor turn electricity into rotational motion?

 10 Minutes   Show what you know QUIZ SHOW Review 

A.    What is a magnet?

B.    Why are some things magnetic and others not?

C.    What is an electromagnet?

D.    What is a motor?

E.     How can you change the direction a motor spins?

F.     How can you increase the speed a motor spins?



 

Key Terms 

SPDT switch

A switch with one pole and two throws that can control the flow of electricity in two circuits

Breadboard

A device used for quickly prototyping circuits

Reversing circuit

A circuit that makes it possible to change the direction of electron flow

Double reversing circuit

A circuit that makes it possible to change the direction of electron flow in two circuits

Magnet

A material or object that produces a magnetic field

Electro-Magnet

A magnet that can be turned on and off by controlling the flow of electrons.   

Resistor 

Limits the electron flow in a conductor and resistance is measured in Ohms

Motors

An electric motor is series of electromagnets what spinning inside of two or more permanent magnets

Torque

Torque is a twisting force

Friction

Understand that friction resists movement between molecules in contact with each other

 




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