Magnetism PowerPoint, Physical Science Lesson

• Activity! Building a small electric engine.
• F.) Attach an cable clips to each paper clip
just above the rubber band.

• RED SLIDE: These are notes that are very
important and should be recorded in your
science journal.
Copyright © 2010 Ryan P. Murphy

-Nice neat notes that are legible and use indentations
when appropriate.
-Example of indent.
-Skip a line between topics
-Don’t skip pages
-Make visuals clear and well drawn. Please label.
Ice
Melting Water
Boiling Vapor
GasT
E
M
P
Heat Added 

• RED SLIDE: These are notes that are very
important and should be recorded in your
science journal.
• BLACK SLIDE: Pay attention, follow
directions, complete projects as described
and answer required questions neatly.

• Electricity Available Sheet

 Electric Fields: The funky area near any
electrically-charged object.
 Replace electrostatic for funky.

• Visit a magnetic field simulator.
http://phet.colorado.edu/en/simulation/mag
nets-and-electromagnets

 Opposite charges attract.

 The Same forces repel.

• Which one is right and which is wrong?

• Answer: They are both wrong.

• Answer: Now they’re both right.

• Activity Simulation. Magnetic Field Hockey
• http://phet.colorado.edu/en/simulation/electr
ic-hockey

Reminder to teacher to reset
the arrows!

• Magnet: An object that is surrounded by a
magnetic field and that has the property,
either natural or induced, of attracting iron or
steel.

• Activity! Fun with Magnets for 2:39
seconds then we are moving on.
– The class can earn additional “play time” with
good behavior.

• Ferrofluids Video Link! (Optional)
– http://www.youtube.com/watch?v=kL8R8SfuXp
8&feature=related

• Activity. The Fonz
– Try and pick up paper hole punches with a
plastic comb.
– Next run the comb through your hair and over
your clothes to collect a charge.
– Try again. What happened?

 New Area of Focus: Magnetism

 Magnetism: The force produced by a
magnetic field.
Electric charges in motion.

 A magnet is an object or a device that
gives off an external magnetic field.

• Demonstration – Iron filings over a
magnetic field
– Sprinkle iron filings on a piece of paper.
– Create the two poles a magnetic field with a
magnetic from underneath the paper.
– Identify the magnetic fields with a visual in
your journal.

• Demonstration – Iron filings over a
magnetic field. Answer to visual!
– Sprinkle iron filings on a piece of paper.
– Create the two poles a magnetic field with a
magnetic from underneath the paper.
– Identify the magnetic fields with a visual in
your journal.

• The term magnetism is derived from
Magnesia, the name of a region in Asia Minor
where lodestone, a naturally magnetic iron
ore, was found in ancient times.

• The spinning inner cores of solid and liquid
Iron creates a giant electromagnetic field.

• The EM field creates a kind of force field
against charged particles from hitting
Earth.

• This would be our Earth without the
protective electromagnetic field created by
our spinning core.

• Earth Available Sheet, Formation,
Seasons, EM Field, Phases of the Moon.

• Activity! Drawing the earth’s EM Field.

EM Field refers to Electromagnetic

– Pass out a paper plate to everyone.
– Draw a Earth about the size of a golf ball in the
center.
– Spread iron filings all around the plate.

– From below, place a magnet beneath the earth and
record the magnetic field that is created.

– Sketch the magnetic field / directions of the iron
filings.

– Sketch the magnetic field / directions of the iron filings.

– Sketch the magnetic field / directions of the iron
filings.
Copy your sketch
into you science
journal and label
as the EM Field

• Electromagnetic field protects the earth
from charged particles.
– It also creates the Aurora borealis (Northern
Lights)

Earths EM field. Learn more:
http://image.gsfc.nasa.gov/poetry/
magnetism/magnetism.html

• Video Link. Aurora borealis
– http://www.youtube.com/watch?v=FcfWsj9OnsI
– It needs music
http://www.youtube.com/watch?v=OPFr1nVwwsA

• Most of the atmosphere that use to be on
Mars, as well as the abundance of liquid
water is now gone because of the planets
weakened EM field.

• Most of the atmosphere that use to be on
Mars, as well as the abundance of liquid
water is now gone because of the planets
weakened EM field.
– Solar winds blew them away.

Compass: A navigational instrument for
determining direction relative to the earth's
magnetic poles.

• The magnetic poles of the earth have shifted
throughout Earth’s history.

• The magnetic poles of the earth have shifted
throughout Earth’s history.
Magnetism. Learn More http://www.school-
for-champions.com/science/magnetism.htm

• How to hold the compass and your posture is
very important to get correct bearings.
•

• Activity! Learning to use a compass.
– Put “Red Fred in the shed”
– Put “Black Jack in the shack”

Red Fred

Red Fred
Shed

Shed

• Video Link! Using a Compass
– http://www.youtube.com/watch?v=6mTISEANFFY
Shed
Follow direction arrow when
Red Fred is in the Shed

• Going outside to use the compass.
– Find 0 degrees / North (hold and face)
– Mark ground at feet with object.
– Turn dial to 120 degrees, (Put Red Fred in the shed.)
– Face and sight a target, take 30 steps keeping red
Fred in shed.
• Follow the red arrow when Red Fred is in the shed.
– Turn dial to 240 degrees (Put Red Fred in the shed)
Fred in shed.
– Turn dial to 360 degrees / North (Red Fred It)
Fred in shed.
– How close were you?

• Activity! (Optional) Participate in an
Orienteering Course or create your own.
“Do you
see the
Owl?”

• Activity! (Optional) Participate in an
Orienteering Course or create your own.
“Yah,” “He’s
that way.”

• Activity – Magnets

• Please use the magnets and demonstrate
the following (Show me as I walk around)

– Opposite poles attract

– Same poles repel

– Same poles repel
– Electromagnetic field

• Demonstration -Iron (Fe) is a very common
magnet.
– Neodymium magnets are some of the strongest
on Earth.

 Faraday's Law: The changing of a
magnetic field can create voltage.

• Electrical motors and generators use this
law. Magnets and Electricity

• Electrical motors and generators use this
law. Magnets and Electricity
– How many products can we mention?

• Activity Simulator. Faraday’s Law and
introduction to electromagnets.
• http://phet.colorado.edu/en/simulation/faraday

• An electric motor uses the attraction and
repelling properties of magnets to create
motion.

• Electric motors use a permanent magnet
and temporary magnet.

– The permanent magnetic has a north and
south Pole.

– The permanent magnetic has a north and
south Pole.
– The temporary magnet is a special magnet
called an electromagnet. It is created by
passing an electric current through a wire.

• The motor works by passing an electric
current through a wire.

– The permanent magnet has a magnetic field (north pole
and south pole) all of the time.

– The permanent magnet has a magnetic field (north pole
and south pole) all of the time.
– The electromagnet only has a magnetic field when current
is flowing through the wire.

• The strength of the electromagnet's magnetic
field can be increased by increasing the
current through the wire, or by forming the
wire into multiple loops.

• When the battery is not connected, the
temporary magnet (loop / electromagnet)
sits in the magnetic field of the permanent
magnet.

magnet.
– When you connect the battery the temporary
magnetic field interacts with the permanent
magnetic field.

magnet.
magnetic field.
– Attracting and repelling forces created.

magnet.
magnetic field.
– Attracting and repelling forces created.
– These forces push the temporary magnet
(loop) which can spin freely.

• Video Link and Directions.
• How to make a simple electric motor
• http://www.youtube.com/watch?v=ziWUmI
UcR2k

• A.) Coil the wire around the D battery
many times. Remove the coil and wrap the
ends around two sides of the coil to hold it
in place. Leave 4 inches of wire on each
end.

• B.) Strip both ends of the wire coil leads.

• B.) Strip both ends of the wire coil leads.
Hold the coil vertically and coat one half of
one lead with a permanent marker. Apply
a second coat of ink a few minutes later.

• C.) Turn plastic cup upside down and
place magnets to the top and bottom of
cup.

• D.) Straighten the outside ends of both
paper clips to form a “P.” Attach the paper
clips to the cup using several rubber
bands.

• E.) Balance the coil in the paper clip loop.
Adjust the height so the coil is very close
to the magnets when it spins.

• G.) Connect the D-cell battery to the coil
with clips. Give the coil a gentle spin.

• H.) Make adjustments, modifications and
anything else to make it work.

Another version
of the motor.
Neodymium
Magnet

• Okay, So how does it work? Which one is
correct?
• A.) The magnetic force from the battery
combined with the hoop spins the ring counter
clockwise.
• B.) The hoop creates a Faraday cage and the
extra electrons spin the hoop counter clockwise.
• C.) Charges moving through a magnetic field
experience a push dependent upon the direction
of the magnetic field.
• D.) The earth’s magnetic field is turned on when
you connect the battery and spins Northward.
• E.) Electrons get excited when they go around
the copper wire loops. This excited state spins
the loop against the electron gradient.

• Okay, So how does it work? Which one is
correct? And the answer is…
• A.) The magnetic force from the battery
combined with the hoop spins the ring counter
clockwise.
• B.) The hoop creates a Faraday cage and the
extra electrons spin the hoop counter clockwise.
• C.) Charges moving through a magnetic field
experience a push dependent upon the direction
of the magnetic field.
• D.) The earth’s magnetic field is turned on when
you connect the battery and spins Northward.
• E.) Electrons get excited when they go around
the copper wire loops. This excited state spins
the loop against the electron gradient.

• Answer: It works on the principal of
Faraday's Law of electromagnetic induction.
This force depends on the direction of the
magnetic field. Because the wire is stripped
on one side, it alternates the current from on
to off every 1/2 rotation.
• Halfway through the spin, the ring gets current and
receives a boost.

• Answer: It works on the principal of
Faraday's Law of electromagnetic induction.
A current-carrying conductor generates a
magnetic field; when this is placed in
between the poles of a strong magnet, it
generates rotational motion.
– This force depends on the direction of the
magnetic field. Because the wire is stripped on
one side, it alternates the current from on to off
every 1/2 rotation.
• Halfway through the spin, the ring gets current and
receives a boost.

 Electromagnets: By running electric
current through a wire, you can create a
magnetic field.

• The advantage of an electromagnet is that
you can turn it on and off.

• We created an electromagnet when we
created our electric motor.

• Please record this spreadsheet in your
journal.
Size of battery Number of paper clips collected
AA Trial___________ Trial___________ Trial______________
D Trial___________ Trial___________ Trial______________

• Activity – Building an electromagnet
– Draw the finished product in journal.
– How many paper clips can it pick up with AA and
then D battery? Why?
– Practice turning on / off with the magnet by
transporting paperclips to the empty cup.
Electromagnets. Learn more.
http://www.howstuffworks.com/electromagnet.htm

• You should be close to page 8 in your
bundle.

• Video Link! Electricity Review
• http://www.youtube.com/watch?v=D2mon
VkCkX4

• http://sciencepowerpoint.comWebsite Link:

http://sciencepowerpoint.com/Energy_Topics_Unit.html
Areas of Focus within The Matter, Energy, and the Environment Unit.
There is no such thing as a free lunch, Matter, Dark Matter, Elements and
Compounds, States of Matter, Solids, Liquids, Gases, Plasma, Law Conservation of
Matter, Physical Change, Chemical Change, Gas Laws, Charles Law, Avogadro’s
Law, Ideal Gas Law, Pascal’s Law, Viscosity, Archimedes Principle, Buoyancy,
Seven Forms of Energy, Nuclear Energy, Electromagnet Spectrum, Waves /
Wavelengths, Light (Visible Light), Refraction, Diffraction, Lens, Convex / Concave,
Radiation, Electricity, Lightning, Static Electricity, Magnetism, Coulomb’s Law,
Conductors, Insulators, Semi-conductors, AC and DC current, Amps, Watts,
Resistance, Magnetism, Faraday’s Law, Compass, Relativity, Einstein, and E=MC2,
Energy, First Law of Thermodynamics, Second Law of Thermodynamics, Third Law
of Thermodynamics, Industrial Processes, Environmental Studies, The 4 R’s,
Sustainability, Human Population Growth, Carrying Capacity, Green Design,
Renewable Forms of Energy.

• Please visit the links below to learn more
about each of the units in this curriculum
– These units take me about four years to complete
with my students in grades 5-10.
Earth Science Units Extended Tour Link and Curriculum Guide
Geology Topics Unit http://sciencepowerpoint.com/Geology_Unit.html
Astronomy Topics Unit http://sciencepowerpoint.com/Astronomy_Unit.html
Weather and Climate Unit http://sciencepowerpoint.com/Weather_Climate_Unit.html
Soil Science, Weathering, More http://sciencepowerpoint.com/Soil_and_Glaciers_Unit.html
Water Unit http://sciencepowerpoint.com/Water_Molecule_Unit.html
Rivers Unit http://sciencepowerpoint.com/River_and_Water_Quality_Unit.html
= Easier = More Difficult = Most Difficult
5th – 7th grade 6th – 8th grade 8th – 10th grade

Physical Science Units Extended Tour Link and Curriculum Guide
Science Skills Unit http://sciencepowerpoint.com/Science_Introduction_Lab_Safety_Metric_Methods.
html
Motion and Machines Unit http://sciencepowerpoint.com/Newtons_Laws_Motion_Machines_Unit.html
Matter, Energy, Envs. Unit http://sciencepowerpoint.com/Energy_Topics_Unit.html
Atoms and Periodic Table Unit http://sciencepowerpoint.com/Atoms_Periodic_Table_of_Elements_Unit.html
Life Science Units Extended Tour Link and Curriculum Guide
Human Body / Health Topics
http://sciencepowerpoint.com/Human_Body_Systems_and_Health_Topics_Unit.html
DNA and Genetics Unit http://sciencepowerpoint.com/DNA_Genetics_Unit.html
Cell Biology Unit http://sciencepowerpoint.com/Cellular_Biology_Unit.html
Infectious Diseases Unit http://sciencepowerpoint.com/Infectious_Diseases_Unit.html
Taxonomy and Classification Unit http://sciencepowerpoint.com/Taxonomy_Classification_Unit.html
Evolution / Natural Selection Unit http://sciencepowerpoint.com/Evolution_Natural_Selection_Unit.html
Botany Topics Unit http://sciencepowerpoint.com/Plant_Botany_Unit.html
Ecology Feeding Levels Unit http://sciencepowerpoint.com/Ecology_Feeding_Levels_Unit.htm
Ecology Interactions Unit http://sciencepowerpoint.com/Ecology_Interactions_Unit.html
Ecology Abiotic Factors Unit http://sciencepowerpoint.com/Ecology_Abiotic_Factors_Unit.html

• The entire four year curriculum can be found at...
http://sciencepowerpoint.com/ Please feel free to
contact me with any questions you may have.
Thank you for your interest in this curriculum.
Sincerely,
Ryan Murphy M.Ed
www.sciencepowerpoint@gmail.com

Magnetism PowerPoint, Physical Science Lesson

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