HW: 6.2 PTG, Pg. 612-613, #1-4 LO:

Use a physical model to describe the flow of electric charges in series and parallel circuits.

SC: Develop a physical

model for electric current and potential energy

Use this physical model to trace the flow of electric charges in series and parallel circuits.

DO NOW: Write LO and SC on

new left side page WDYS/WDYT-pg.

606 Investigate

Part A: vocabulary with pretzels

Ch 6 Section 2 Students assemble like picture on page

607. Teacher = switch 1 student = battery 1 student – light bulb Rest = charges (only charged when

student has pretzel in their hand)

Part A Round 1

Battery=energy supply=joules=pretzels Light bulb=dancing student Electric charges=coulomb=students

Part A Round 2:

Battery=energy supply=joules=pretzels “I am one VOLT, which means, I am one joule

(pretzel) of energy to each coulomb (student)” “Please move along, one coulumb (student) per

second is one amp of current” Light bulb=dancing student

“I just received one joule (pretzel) of energy from that coulomb (student)

Electric charges=coulomb=students “I just gained one joule of energy from the battery” “I just gave one joule of energy to the light bulb”

Part A Round 3

Battery is 3 Volts Gives each coulomb 3 joules of energy

Part A Round 4

Battery is 1 Volt Current is 2 amps=2 coulombs per second

Students answer… #9 page 608: a, b, c, d, e, f

HW: 6.2 PTG, Pg. 612-613, #1-4 LO:

Use a physical model to describe the flow of electric charges in series and parallel circuits.

SC: Develop a physical

model for electric current and potential energy

Use this physical model to trace the flow of electric charges in series and parallel circuits.

DO NOW: Describe the

difference between a joule and a volt.

Agenda Investigate

Part B: vocabulary with pretzels

Part B Series circuit

2 light bulbs, each must get some energy Battery is 1 Volt Charges have to spread their joule (pretzel) to

each light bulb equally

Students answer… #2 a #3 a, b, c, d

#4 1V battery = 1 J of energy (pretzel) for each

coulomb (student) of charge Charges flowed at the rate of 1 amp (or 1

coulomb per second=1 student per second) The # of Joules (pretzels) per second that a

bulb receives determines how BRIGHT the bulb is

Joules per second=Power (measured in Watts) 1 Watt=1 Joule/sec Which will be brighter? A 100-W bulb or a 40-

W bulb? Why?

Students answer… #4a: copy table at top page 609

Vocabulary Boxes Potential energy Electric potential

energy Battery Resistor Coulomb Current

Voltage Volt Joule Ampere Series circuit Watt

HW: 6.2 PTG, Pg. 612-613, #1-4 LO:

Use a physical model to describe the flow of electric charges in series and parallel circuits.

SC: Develop a physical

model for electric current and potential energy

Use this physical model to trace the flow of electric charges in series and parallel circuits.

DO NOW: Find the joules per

second for a 3 volt battery, with a 5 amp current.

Investigate Part A: vocabulary

with pretzels

Physics Talk Expectations Volume

Actions

Questions?

Finished with the slide?

Students are quiet and headphones are off

Notebooks are out and pencils are recording information from the board

Students must raise their hand to ask or answer questions.

Please wait patiently without talking or distracting your neighbor

Physics Talk 6.2 How is your

bloodstream similar to an electric current?

Like blood cells, electrons carry energy to the light bulb. The energy is used up (pretzel/joule), but the electron is not (student)

Physics Talk 6.2 What is electrical

potential energy? Energy that has not

yet been used up and is being held by an electron or battery

Physics Talk 6.2 What is a resistor? An object in an

electrical circuit that consumes energy. This object will often determine how quickly the electrons can pass by (current)

Physics Talk 6.2 An explanation of

the electron shuffle

Physics Talk 6.2 What is a series

circuit? An electrical circuit

where there is only one path for the electrons to follow

The electrons move with the same current throughout the entire circuit

Physics Talk 6.2 How do we

represent a series circuit?

Physics Talk What determines

the brightness of a light bulb?

The number of Watts, or Joules per second.

You can use the following equation for a series circuit (thank you Ayo and Arthur)

W = Power V= Volts A= current (amperes) R = resistors, or

number of light bulbsRAVW

Essential Questions p 61210 minutes

What does it mean? How do you know? Why should you care?

Expectations Stay in your seat Speak at a whisper with your neighbor Record Answers in notebook

Vocabulary BoxesBook Definition – Your Definition – Picture

Potential energy Electric potential

energy Battery Resistor Coulomb Current

Voltage Volt Joule Ampere Series circuit Watt

ExpectationsStay in your seatSpeak at a whisper with your neighborRecord Answers in notebook