Physical Science Unit_3.Electricity and Magnetism - Currituck ...

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Oct 7, 2013 (4 years and 2 months ago)

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Subject:

Physical Science

Grade Level:

9
-
12

Unit Title:

Electricity and Magnetism

Timeframe Needed for Completion:

13

days

Grading Period:


2nd

Nine Weeks

Big Idea/Theme:

Electricity and Magnetism

Understandings:



Understand electricity and magnetism and

their relationship.


Essential Questions:



What is the connection between electricity and magnetism?



Why is electricity important to us?



How would your daily life change if magnets no longer
existed?



What is so shocking about electricity?



Essential St
andards:

PSc.3.3.1

Summarize static and current electricity.

PSc.3.3.2

Explain simple series and parallel DC circuits in



terms of Ohm’s law.

PSc.3.3.3

Explain how current is affected by changes in


composition, length, t
emperature, and diameter of


wire.

PSc.3.3.4

Explain magnetism in terms of domains,


interactions of poles, and magnetic fields.

PSc.3.3.5

Explain the practical application of magnetism.



Essential Skills/Vocabulary:

P
Sc.3.3.1

• Identify interactions between charged objects
-

opposite


charges attract and like charges repel.

• Compare the three methods of charging objects:


conduction, friction, and induction



explain the re
-


distribution or transfer of
electro
ns

for each method for


both positively and negatively charged objects.

• Compare
static and current electricity

related to


conservation of charge and movement of charge (without


calculations).


PSc.3.3.2

• Interpret simple
circuit diagrams

usin
g symbols.

• Explain
open and closed circuits
.

Assessments/Activities
:



Quick Wr
ite: Static Electricity



Static Electricity Lab



Fields of Like Charge Inquiry Activity



Create a “PSA” assignment for cellular phones at the gas
pumps.



Quick Write: What is the difference between a wet cell
and a dry cell?



Hot Fingers
-
How Does current Travel

in a Battery?
Inquiry Activity



Lab:
Comparing
Series and Parallel Circuits



Writing Prompt: How would your school day de different if
your school was wired on a series circuit?



Create a model of a room that is wired in a parallel
circuit.



Ohm’s Law Practic
e Problems



Electrical Power Practice problems

• Apply
Ohm’s law

and the
power
equation to simple
DC


Circuits
:

V
=
IR

& P=VI

• Compare
series and parallel circuits
. Conceptually


e
xplore

the flow of electricity in series and parallel


circuits.


• Explain how the flow of electricity through series and


parallel circuits is affected by
voltage

and
resistance
.


PSc.3.3.3

• Explain how the wire in a circuit can affect the
current


present


for a set voltage, the current in a wire is


in
versely proportional to its
resistance

(more current


exists where resistance is low); the resistance of a material


is an intensive property called
resistivity
; increasing the


length of a wire increases the resistance; increasing the


tempera
ture increases the resistance; increasing the


diameter of a wire decreases its resistance.

• Explain using a cause
-
and
-
effect model how changes in


composition, length, temperature, and diameter of a wire


would affect the current in a circuit.


PSc.3.3.4

• Describe the characteristics and behaviors of
magnetic


domains.

• Explain the attractions of unlike
poles

and the repulsion of


like poles in terms of
magnetic fields
.

• Explain magnetic fields produced around a current
-


carrying w
ire and wire coil (solenoid).

• Explain the relationship between strength of an


electromagnet

and the variance of number of coils,


voltage,

and core material.


PSc.3.3.5

• Explain the relationship between electricity and magnetism



Electricity mini
-
test



Quick Write: Why are magnets important?



Observing Magnetic Interference Lab



Writing Prompt: How would your life change if magnetism
stopped in the next 10 minutes.



Lab: Electromagnet



20 wo
rd Gist: How would you make a better
electromagnet?



Read The War of Currents article and respond.



Electricity and Magnetism Lab



Writing Prompt: Why was the discovery of alternating
current so important?



Magnetism mini
-
test



Electricity and Magnetism Unit Te
st


21
st

Century Skills

Activities

Communication Skills


Conveying thought or opinions
effectively


When presenting information,
distinguishing between relevant
and irrelevant information


Explaining a concept to others


Interviewing others or being
i
nterviewed


Computer Knowledge


Using word
-
processing and
database programs


Developing visual aides for
presentations


Using a computer for
communication


Learning new software
programs


Employability Skills


Assuming responsibility for own
learnin
g


Persisting until job is completed


Working independently


Developing career interest/goals




in practical

applications such as
generators

and
motors





the process of
electromagnetic induction

in electric


generators that converts
mechanical energy

to
electrical



energy
; transformation of electric energy to mechanical


energy in motors.

• Extrap
olate other practical applications such as security


cards (ATM, credit or access cards), speakers, automatic


sprinklers, traffic signal triggers,
seismometers
, battery


chargers,
transformers
, AC
-
DC adapters.








Responding to criticism or
questions


Information
-
retrieval Skills


Searching for information via the
computer


Searching for print information


Searchin
g for information using
community members


Language Skills
-

Reading


Following written directions


Identifying cause and effect
relationships


Summarizing main points after
reading


Locating and choosing
appropriate reference materials


Reading for
personal learning


Language Skill
-

Writing


Using language accurately


Organizing and relating ideas
when writing


Proofing and Editing


Synthesizing information from
several sources


Documenting sources


Developing an outline


Writing to persuade

or justify a
position



Creating memos, letters, other
forms of correspondence


Teamwork


Taking initiative


Working on a team



Thinking/Problem
-
Solving
Skills


Identifying key problems or
questions


Evaluating results


Developing strategies to
a
ddress problems


Developing an action plan or
timeline





Materials Suggestions:

Lab

supplies