Electricity Unit Overview

GOALS

Process:

·      Use electrical measuring equipment such as voltmeters and ammeters

·      Draw and interpret circuit diagrams

·      Create and interpret graphs relating voltage to resistance

Content:

·      Correctly apply equations P=IV and V=IR in order to determine the power, potential difference, current, and resistance for any point in a circuit

·      State the differences between parallel and series circuits

o   Calculate resistance in parallel and series circuits

·      Properly use terms resistance, current, voltage, power, and charge and know their associated units

·      Describe the function and structure of electrical equipment (batteries and capacitors)

·      Describe what resistance is and what affects an object’s resistance

·      Know the difference between direct and alternating current

KEY DATES

Homework due:  May 1, May 9, May 15

Lab due May 10/15 tentative

Test May 16/17

Material in the unit corresponds to chapters 22 and 23 in the text book and here at the physics classroom.

Light Review Options

Review Questions

Review Questions Key

Finally about 20% of the unit test will be about how scientists understand the nature of light.  We have not only investigated the particle and wave models we have looked at how experiments have caused our understanding of light to switch models.  This document summarizes some of the major observations and experiments we have considered and identifies which model they support more strongly.

More review answers are here Snell's Law Worksheet - Key

Staying Caught up while you're missing class

There are lots of absences for various reasons.  Here are some online resources.


Converging lens activity and notes on principle rays and ray diagrams
Something similar online :  Most of lesson 5 here  http://www.physicsclassroom.com/class/refrn  Also the interactive that is linked to throughout the lessons will be good.

diverging lenses:  More of lesson 5 here:  http://www.physicsclassroom.com/class/refrn  and the interactive

Details about the wave model - interference, the 2 slit experiment, and the electro magnetic spectrum
Something similar online:  http://www.physicsclassroom.com/class/light lessons 1 a,b,c 2a and 3a

Videos about them here.
https://www.youtube.com/watch?v=K74m_A3L0xM
https://www.youtube.com/watch?v=Dy2m45CQs5E


The photoelectric effect, Compton x-ray scattering:  Online possibilities: http://www.youtube.com/watch?v=4uBekxM4vEc

http://phet.colorado.edu/en/simulation/photoelectric