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The heart of an electric car: an electromagnet!
• What is an electromagnet? What are its parts?
•What are the basic properties of an electromagnet?
•What is the relationship between electromagnets and
electric motors?
•What is the relationship between electromagnets and
electric cars?
WHY DO YOU THINK IT MAY BE IMPORTANT TO ANSWER THE
QUESTIONS ABOVE?
Things you need to know before you move on:
• Need to know: this website includes “need to know”
sections that will provide you with some basic information
on relevant topics. “Need to know”s include practical
information you will need to participate in the activities
involved and to answer the questions that will be posed.
• Thought questions: Thought questions will pose
interesting questions that will promote reflecting about
what you have been learning that far.
How to navigate through the website:
Bring me home
Bring me to the previous page
Bring me to the next page
Bring me to the end
Can a magnet powered by a battery or electricity? Why or why
not? Type in your answer(s) or prediction(s) in the box below.
Learner:
Through this learning module, you will learn about
electromagnetism (= electricity + magnetism).
Besides, to learn what you will be able to do after
completing this learning module, click on the
present or learning boxes below:
• ( Name parts of an electromagnet)
• ( Know basic concepts related to an
electromagnet )
• ( Assemble a simple electromagnet)
• (Increase strength of an electromagnet)
• (Relate an electromagnet to an electric motor)
• (Relate an electromagnet to an electric car)
Create your own present or learning box…Type
your own possible learning goals in the box
below:
Goal 1:
When Sally studied the present learning module, she
determined the following criteria for her learning
experience: “When I study this online site on
electromagnetism, I need to make sure that I will have
knowledge of certain things. I need to be able to name
parts of an electromagnet, why we call it an electromagnet,
properties of it, and how it relates to an electric motor. This
is awesome, since these are the building blocks of an
electric car that would not worsen global warming! Also, it
is a fantastic way of being green!
If you have anything to add please type it in the box below:
Verbal overview of the learning module…This
can also be a graphic organizer…Favorably, this
can be a story about a child who wants to find
out the relationship between an
electromagnet and an electric motor and or
electric car.
What is an electromagnet?
An electromagnet is typically a man-made magnet
that is powered by electricity. An electric current
produces a magnetic field when it surrounds a
metal such as iron, nickel, or cobalt.
The strength of an electromagnet can be changed
by changing the amount of electric current that
flows through the circuit.
Reversing the flow of electricity through the circuit
causes the poles of the electromagnet to reverse
as well.
Can I Make One At Home?
Establishing shot showing the location of the
action
Close-ups or zooming in to show the individual
actions and parts of an electromagnet held by
the actress in hand.
Present the actress…
Here, the actress will introduce the activity
generally and state the purpose of the
demonstration.
Present the parts of the electromagnet.
Naming each part by showing it (by hand)
She can show that the nail alone is not
magnetic.
Then, she will assemble the electromagnet.
Explaining the procedure step by step.
She can show that the nail on the wire is called
the ferromagnetic core and demonstrate that
this is still not magnetic.
What do you think we need to do to make the
magnet work? Please, type in your answer in
the box below
Answer:
Click here to see the answer and compare it to yours
She connects the circuit and explains the answer to
the preceding question
+
Video depicting current and magnetic field
Thought question (please reflect upon and answer to
the following question before you move on): Any
differences and similarities between your answer and
the answer given here?
She can show that the nail on the wire is called the
ferromagnetic core and demonstrate that this is still not
magnetic. How come?
Need to know: When faced by such situations, scientists
develop hypotheses or working ideas on what would be the
possible answer or answers to an existing research
question? What are your hypotheses in this situation?
Please, type in your answer in the box below:
Answer:
COMPREHENSION CHECK!
Now you have finished your learning experience of
electromagnets, it is time to check your comprehension… These
questions are not a test! These comprehension checks exist just
to inform you about what you should review and whether you
are ready to learn new things! This comprehension check will
ask you some questions in a multiple choice format. There are
multiple correct answers. If you don’t get everything right the
first time, don’t worry. You will have an opportunity to go back
and review areas that you may still be unclear. So, this is
another chance to learn! Let`s take it! Click here to start the
comprehension check
4. Electromagnets have certain components. Which one(s) of
the following are typical components of an electromagnet?
(click all the apply)
a) A nall
b) A bolt
c) A plastic cord
d) A battery
e) A wire
Feedback for each option of the fourth question…
1. Electromagnets have certain properties. Which one(s) of the
following describe(s) the properties of an electromagnet? (click
all the apply)
a) An electromagnet has a power source
b) Switching the direction of the circuit does not change any of the
electromagnets properties.
c) An electromagnet occurs frequently in nature
d) An electromagnet has an core of material that can be magnetized
e) Once the electricity to the electromagnet is turned off, the
electromagnet still maintains its magnetism
Congratulations you caught one of the correct
answers!
Corrective Feedback for option “a”
Click here to turn back to the question and choose
another option
Switching the Direction of the circuit causes the
poles of the electromagnet to reverse… Corrective
Feedback for option “b”
Click here to turn back to the question and choose
another option
Electromagnets are man-made… Corrective
Feedback for option “b”
Click here to turn back to the question and choose
another option
Congratulations you caught one of the correct
answers!
Corrective Feedback for option “d”
Click here to turn back to the question and choose
another option
Congratulations you caught one of the correct
answers!
Corrective Feedback for option “e”
Click here to turn back to the question and choose
another option
How do electromagnets relate
to electric motors?
How do you think electromagnets relate to
electric motors? Please, type in your answer in
the box below
Answer:
Click here to see the answer and compare it to yours AGAIN VIDEO?: nooooo
It’s Time for A Scavenger Hunt!
In order to better understand how
electromagnets relate to electric motors, we
are going to have you go on an electronic
scavenger hunt!
We are going to provide you with a list of a few
web sites to visit. Go to those sites listed, read
the information and answer the following
questions.
Please visit the following cites:
http://www.ndted.org/EducationResources/HighSchool/Magnetism/electricmotor.htm
http://electronics.howstuffworks.com/motor4.htm
http://www.school-for-champions.com/science/electromagnetic_devices.htm
What happens when the flow of current in an electromagnet is
reversed?
Answer:
Click here to see the answer and compare it to yours
How does this reversal of current relate to the mechanism in
action in an electric motor?
Answer:
Click here to see the answer and compare it to yours
COMPREHENSION CHECK!
Let`s take it! Click here to start the comprehension check
2 . Electromagnets are related to electric motors. Which one(s)
of the following describe(s) the relationship of electromagnets
to electric motors? (click all the apply)
a) Electromagnets are located in electric motors
b) Electric motors make the electromagnets work
c) Electromagnets give the electric motors the energy to work
d) Electric motors and electromagnets are separate parts of an electric car
e) Electromagnets function as electric motors
How do electromagnets relate
to electric cars?
How do you think electromagnets relate to
electric cars? Please, type in your answer in the
box below
Answer:
Click here to see the answer and compare it to yours
Some More Scavenging!
We are going to provide you with a list of a few
web sites to visit. Go to those sites listed, read
the information and answer the following
questions.
Please visit the following cites:
More Web sites…
http://www.solarnavigator.net/electric_motors.htm
http://education.jlab.org/qa/electromagnet_04.html
Where can the electromagnet be found in an electric vehicle?
Answer:
Click here to see the answer and compare it to yours
Describe the relationship between an electromagnet and an
electric car?
Answer:
Click here to see the answer and compare it to yours
COMPREHENSION CHECK!
Let`s take it! Click here to start the comprehension check
1. There is a relationship between electromagnets and electric
cars. Which one(s) of the following describe(s) the relationship
of electromagnets to electric cars? (click all the apply)
a) Electromagnets help power electric cars.
b) Electric cars make electromagnets work.
c) Electromagnets are the basic components of motors of electric cars.
d) Electric cars change the capacity limit of electromagnets
e) Electromagnets can speed up or slow down electric cars.
Feedback options for question
Click here to turn back to the question and choose
another option
Congratulations! You have earned all the presents!
You are one step farther toward your goal of driving
an electric vehicle!
• ( Name parts of an electromagnet)
• ( Know basic concepts related to an
electromagnet )
• ( Assemble a simple electromagnet)
• (Increase strength of an electromagnet)
• (Relate an electromagnet to an electric motor)
• (Relate an electromagnet to an electric car)