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Swallows Charter Academy
Domain Map
Unit 3 Electricity and Magnetism
8th Grade Science
Grade-Level Domain MAP
Core Knowledge Content
State Standards
Literature –
History/Geography –
Science –
1. Physical Science
II. Electricity and Magnetism
1.
Identify and calculate the direction
and magnitude of forces that act on an object, and
explain the results in the object’s change of motion
A. Electricity
• Basic terms and concepts (review from grade 4):
Electricity is the charge of electrons in a conductor.
Opposite charges attract, like charges repel.
2.
There are different forms of energy,
and those forms of energy can be changed from one
form to another – but total energy is conserved
Open and closed circuits
3.
Distinguish between physical and
chemical changes, noting that mass is conserved
during any change
Short circuit: sudden surge of amperage due to the
reduction of resistance in a circuit; protection from
short circuits is achieved by fuses and circuit breakers
4.
Recognize that waves such as
electromagnetic, sound, seismic, and water have
common characteristics and unique properties
Conductors and insulators
Electrical safety
• Electricity as the charge of electrons
Electrons carry negative charge; protons carry positive
charge
Conductors: materials like metals that easily give up
electrons
Insulators: materials like glass that do not easily give up
electrons
• Static electricity
A static charge (excess or deficiency) creates an electric
field.
Electric energy can be stored in capacitors (typically
two metal plates, one charged positive and one charged
negative, separated by an insulating barrier). Capacitor
discharges can release fatal levels of energy.
Grounding drains an excess or makes up a deficiency of
electrons, because the earth is a huge reservoir of
electrons. Your body is a ground when you get a shock
of static electricity.
Lightning is a grounding of static electricity from
clouds.
• Flowing electricity
Electric potential is measured in volts.
Electric flow or current is measured in amperes: 1
ampere = flow of 1 coulomb of charge per second (1
coulomb = the charge of 6.25 billion billion electrons).
The total power of an electric flow over time is
measured in watts. Watts = amps x volts; amps =
Template © 2012, Core Knowledge Foundation. All rights reserved.
Swallows Charter Academy
Domain Map
Unit 3 Electricity and Magnetism
8th Grade Science
watts/volts; volts = watts/amps.
The unit of electrical resistance is the ohm.
B. Magnetism and Electricity
• Earth’s magnetism
Earth’s magnetism is believed to be caused by
movements of charged atoms in the molten interior of
the planet.
Navigation by magnetic compass is made possible
because the earth is a magnet with north and south
magnetic poles.
• Connection between electricity and magnetism
Example: move a magnet back and forth in front of wire
connected to a meter, and electricity flows in the wire.
The reverse: electric current flowing through a wire
exerts magnetic attraction.
Spinning electrons in an atom create a magnetic field
around the atom.
Unlike magnetic poles attract, like magnetic poles repel.
Practical applications of the connection between
electricity and magnetism, for example:
An electric generator creates alternating current by
turning a magnet and a coil of wire in relation to each
other; an electric motor works on the reverse principle.
A step-up transformer sends alternating current
through a smaller coil of wire with just a few turns next
to a larger coil with many turns. This induces a higher
voltage in the larger coil. A step-down transformer does
the reverse, sending current through the larger coil and
creating a lower voltage in the smaller one.
Visual Arts –
Music –.
Language Arts
Core Knowledge
CCSS ELA
A. Writing and Research
1. Oral Expression and Listening
• Expository writing: Write nonfiction essays that describe,
narrate, persuade, and compare and contrast.
1. Formal presentations require preparation and
effective delivery
• Write research essays, with attention to asking open-ended
questions gathering relevant data through library and field
research summarizing, paraphrasing, and quoting accurately
when taking notes defining a thesis (that is, a central
proposition, a main idea) organizing with an outline
2. Small and large group discussions rely on active
listening and the effective contributions of all
participants
integrating quotations from sources acknowledging sources
and avoiding plagiarism preparing a bibliography
B. Speaking and Listening
• Participate civilly and productively in group discussions.
2. Reading for All Purposes
1. Literary elements, characteristics, and ideas are
interrelated and guide the comprehension of literary
and fictional texts
2. Informational and persuasive texts are summarized
and evaluated
Template © 2012, Core Knowledge Foundation. All rights reserved.
Swallows Charter Academy
Domain Map
Unit 3 Electricity and Magnetism
8th Grade Science
• Give a short speech to the class that is well-organized and
well-supported.
3. Purpose, tone, and meaning in word choices
influence literary, persuasive, and informational texts
• Demonstrate an ability to use standard pronunciation when
speaking to large groups and in formal circumstances, such
as a job interview
3. Writing and Composition
1. Composing literary and narrative texts that
incorporate a range of stylistic devices demonstrates
knowledge of genre features
2. Organization is used when composing informational
and persuasive texts
3. Editing writing for proper grammar, usage,
mechanics, and clarity improves written work
4. Research and Reasoning
1. Answering a research question logically begins with
obtaining and analyzing information from a variety of
sources
2. Logical information requires documented sources
3. Reasoned material is evaluated for its quality using
both its logic and its use of a medium
Prior Knowledge
What Students Will Learn In Future Grades
High School Physics
Fourth Grade Electricity
Cross-Curricular Links
Domain Vocabulary
Magnet, magnetic pole,
magnetic force, magnetic
field, magnetic field lines,
atom, element, nucleus,
proton, neutron, electron,
magnetic domain,
ferromagnetic material,
temporary magnet,
permanent magnet,
Compass, magnetic
declination, Van Allen
Belts, solar wind,
magnetosphere, aurora,
Electric force, electric field,
static electricity,
conservation of change,
friction, conduction,
induction, static discharge,
electric current, electric
circuit, conductor, insulator,
voltage, voltage source,
resistance, Chemical energy,
chemical reaction,
electrochemical cell,
electrode, electrolyte,
terminal, battery, wet cell,
dry cell, Ohm’s law, series
circuit, ammeter, parallel
circuit, voltmeter, Power,
short circuit, grounded, third
prong, fuse, circuit breaker,
Electromagnetism,
solenoid, electromagnet,
energy, electrical energy,
mechanical energy,
galvanometer, electric
motor, electromagnetic
induction, direct current,
alternation current,
electric generator,
transformer, step-up
transformer, step-down
transformer,
Electronics, electronic
signal, analog signal, digital
signal, semiconductor, diode,
transistor, integrated circuit,
electromagnetic wave,
amplitude, frequency,
amplitude modulation AM,
frequency modulation FM,
Computer, binary system,
hardware, central processing
unit CPU, input device,
output device, software,
computer programmer,
computer network, internet,
world wide web, encryption,
computer virus, chat room,
intellectual property,
Instructional UNITS
Literature
History /
Geography
Science
Electricity and
Magnetism Book N
Chapters 1-4
Template © 2012, Core Knowledge Foundation. All rights reserved.
Visual Arts
Music
Swallows Charter Academy
Domain Map
Unit 3 Electricity and Magnetism
8th Grade Science
Template © 2012, Core Knowledge Foundation. All rights reserved.