Momentum Preview Assignment

Please read the following two pages from the Physics Classroom website and then do the two question assignment at the UT website.

http://www.physicsclassroom.com/class/momentum/Lesson-1/Momentum

http://www.physicsclassroom.com/class/momentum/Lesson-1/Momentum-and-Impulse-Connection

The UT assignment is due Thursday night.

Unit 4 Review Sheet

Here is a link to the Unit Four Review Questions.  This version has a couple questions about Gravity at the end that we didn't get to this year.  Don't do them.

https://drive.google.com/file/d/0B54jRZBDezIHdzV2c0NiVG5rdms/view?usp=sharing

And another to the Answer Sheet.

https://drive.google.com/file/d/0B54jRZBDezIHUGRGMVFTb3MzR2s/view?usp=sharing

Friction Lab and Gecko Video

Follow this link for the Friction Lab Report Guidelines and scoring guide.

https://docs.google.com/document/d/1MaY_4GOS8PUbUw6dAtp6Us_UVFLOHyfN657sR109U5Q/edit?usp=sharing

The lab is due Dec. 7.  Please include it in your Google Drive Lab Document as the first item.





In some classes I mentioned that Geckos use frictional force to climb surfaces in a surprising way - not through surface irregularities and tiny hooks, but through electrostatic attractions.

Here is a link to a NOVA episode about it.  The gecko section starts at about the 11 minute mark.

http://www.pbs.org/wgbh/nova/tech/making-stuff.html#making-stuff-smarter

Unit 4 - More Force Topics

This unit focus on various additional topics in forces including inclined planes, adding forces in two dimensions, friction, and circular motion.  

Goals
• Be able to add forces in two dimensions.
• Determine the normal force, and the parallel and perpendicular components of gravity for inclined plane problems and solve for acceleration.

• Calculate the frictional force when given the coefficient of friction and vice versa.
• State and apply equations for centripetal acceleration and force.

• Distinguish between the centripetal force and the fictitious centrifugal force.
• Analyze examples of circular motion in terms of Newton's three laws of motion.



Important Dates
Friction Lab : due Mon/Tues Dec. 7, 8.
Homework: Nov. 22, Nov. 29  and Dec. 8, all at 10:00 pm
Unit Test: Dec. 9 and 10

This unit corresponds to parts of chapters 6, and 7 in the book.

Review Sheet Keys for Force unit

 You can start the review packets now.

https://docs.google.com/file/d/0B54jRZBDezIHNVplQ1llazI2YkU/edit

Here is the key also.

https://drive.google.com/file/d/0B54jRZBDezIHYU4wOEZpOXhWdkE/view?usp=sharing

Lab 2: Newton's Second Law

The form linked to below gives you the questions to answer in your next lab report.

Please copy the questions from it into your lab document and answer them.  Also insert the data tables and graphs as requested.

https://docs.google.com/document/d/1HxInZrn-IwDish4SOKo0-T-9SGX3Z-hBWkaSAdIgyBU/edit?usp=sharing

Please make the new report the first thing in your lab document - your googledocs file.

Remember to give me the ability to edit your document.

Unit Three - Newton's Laws

Goals
1.  Draw Force Vectors.
2.  Calculate Weight.
3.  Solve Problems with Net Force.
4.  Know that when an object is at rest or moving with constant velocity that Fnet = 0 and all of the forces are balanced.
5.  Understand what terminal velocity is and how it is reached.
6.  Be able to explain why all objects in freefall have an acceleration of 9.8 m/s2
7.  Understand that forces are interactions between two things and that each object exerts an equal and opposite force on the other.
8.  Know Newton’s Three Laws of Motion by name.

In general, understand Newton’s 3 laws and apply them to explain motion.

 Lab Due Date: Oct. 26 or 27

 Homework due in the evening of Oct. 29, and Nov. 5

Test Date Nov. 11 and 12

Another Review Packet and the answer key for the first one.

Vectors in 2 dimensions practice
answers are on the last page

Review Answers 2013

Monkey Shot Video (Thanks Maxx)

New Logger Pro Download

Here's a slightly newer version of logger pro.

You'll need to get the new password from me too.

 If you're using an older operating system you'll want to use the old download and the old password.


LOGGER PRO DOWNLOADS

     Windows 7, 8, 10
     Logger Pro 3.10.1 with sample movies (Windows)
     Link:http://www.vernier.com/d/fseuh
     Password:

     Mac OS X 10.10, 10.9, 10.8
     Logger Pro 3.10.1 with sample movies (Mac OS X)
     Link: http://www.vernier.com/d/oeblx
     Password:

     Detailed Instructions
     For more details on how to download and install Logger Pro, see:
     http://www.vernier.com/til/2069/

Motion in Two Dimensions - Prereading, initial short homework, and Unit Overview

To help you get ready for our next unit read these three pages from the physics tutorial website or read chapter 4 from the textbook.  Then answer the three on line homework questions on UT Quest website (due Wed. night)

http://www.physicsclassroom.com/Class/vectors/U3L1a.cfm
http://www.physicsclassroom.com/Class/vectors/U3L1b.cfm
http://www.physicsclassroom.com/Class/vectors/U3L1c.cfm


Here are the goals and deadlines for the unit in general.


Unit Goals:
1. Know that perpendicular vectors are independent
2. Add vectors graphically with parallelogram and head to tail methods.
3. Use trig and Pythagorean theorem to find resultant.
4. Break vectors into perpendicular components graphically and with trig.
5. Solve motion problems in 2D.

Test - Wed Oct. 7 and Thurs Oct. 9

Homework due 10:00 pm 9/22 (Tuesday), 9/30 (Wednesday) and 10/6 (Tuesday)

Covers Sections 4.1, 4,2 and 7,2  or  continue reading from the links on the physics tutorial website http://www.physicsclassroom.com/Class/vectors/

Kinematics Review Packet Key

Kinematics Review Key 2013

Fun Graph Matching Game

http://www.theuniverseandmore.com/

Keep the graph within the green band. Get ice cream. Avoid meteors.

Be the first to find out what happens when you get through all of the levels.

Lab Report 1 - Galileo's Dilemma

Students will submit their lab reports to me via google docs.

Please make a google account, and make a single google doc and share it with me.  All of your labs will go one this single document.  Please give me the ability to edit it so that I can add comments and insert my scoring rubrics.

Please use the naming format - lastname.firstname.physicsperiod____

Use my normal email to share it.  

emedley@pps.net

Here is the link to the questions for the first lab.

Galileo's Dilemma

It will probably be easiest if you copy the text from this document into your new lab file and then answer the questions in a different font or color.

Let me know if you have questions.  The lab is due by class time on Wed. Sept. 9, or Thurs. Sept. 10.

Installing Logger Pro

Installing LoggerPro on your home computer:
As a Grant High School student you have the right to install Logger Pro on your home computer.  The following installation links will require a password to decompress.  You will need to get that password from me.


Logger Pro 3.9 with sample movies (Windows)
Link: http://www.vernier.com/d/gvnsz
Password: 

Logger Pro 3.9 with sample movies (Mac OS X)
Link: http://www.vernier.com/d/lps7w
Password: 

Ask me for the password.

Making an on line homework account

Please go to this link and start an online homework account. First Follow the link Log In to Quest.  Then choose "I need a UT EID" below the red button. In the next windows and pages answer the questions to get an ID number from the University of Texas.  After you submit your information it will send your ID code to your email account. With this code you will will sign in to my class and start the first assignment. You may proceed to sign in now or bring your EID code and password on Friday/Monday.  In class we will log in, I will start accepting your enrollment and we will start the first assignment.

This is how to sign in:
Return to the link above and log in.
You will then need to select a class based on a unique number. For Physics the unique number is 2232015. Enter the number and then select "look up course info". Scroll down by clicking the arrow on the window that appears through the many other classes designated with that unique number until you find Physics (Grant High school 2015 Fall). It will probably be the only one. Select it and then select request enrollment.

I will have to admit you into the class. The next time you log in, after I admit you, you will be able to use the "select course" and "select assignment" windows to start the Kinematics homework.

Unit 1: Kinematics

Goals:
1. Know and apply the definition for average velocity.
2. Know and apply the definition for average acceleration.
3. Differentiate instantaneous and average velocity.
4. Interpret graphs of position, velocity and acceleration, including through the use of slopes and the area under the graph.
5. Draw position, velocity and acceleration graphs for described motion.
6. Know the acceleration due to gravity.
7. Solve problems by using 5 basic mechanics equations.
8. Properly use sign conventions for positive and negative acceleration and velocity.
9. Describe sources of error as either random or systematic and suggest basic ways of reducing error such as controlling variables, doing multiple trials, collecting data over a wide range and using big sample sizes.

Homework:                             Due Date

Letter to Teacher                      Mon/Tues 9/1-2

Lab 1 report                            Wed/Thurs, 9/9-10

First Quest hmwk assignment   Thurs. 9/10
Second Quest hmwk assig       Mon. 9/16

Unit Test                                  Thurs/Fri 9/17-18

Welcome to Physics

The 2015-2016 school year has started. Welcome to Physics.

Here is some general information about how the class runs.

Grades:
Approximately 50% Tests, 30% Labs, 20% homework

Tests: About twice a quarter, with semester finals also. Retakes are available, but only half the missed points are recoverable.

Labs: Although we’ll have weekly hands-on lab assignments, I’ll only have you write up formal lab reports about twice a quarter. (The first one will be due Sept. 9/10.) Late labs are penalized at 10% a week.

Homework: Most homework will be submitted online through the web site https://quest.cns.utexas.edu/   It will be graded for accuracy, but on a generous scale because I recognize that homework is practice and created to find mistakes. Students who have difficulty getting internet access should talk with me. Accommodations will be found. No late homework accepted except for excused absences.

Grading Scale: 100-90 A, 90-80 B, 80-70 C, 70-60 D,  0-60 F.

Supplies:
Textbook
Notebook, or section of a notebook
Calculator
Protractor


I hope you find the class challenging and fun.
Ethan Medley

Magnetism Unit Goals

Magnetism (Ch. 24,25)
Homework due 7/4/2015
Test date: Last day of class

Goals:
1. Explain the arrangements responsible for permanent magnets.

2. Describe what affects the strength of magnetic forces and an electromagnet’s field.

3. Describe the shape of magnetic fields around permanent magnets and charge carrying wires.

4. Describe the causes and beneficial effects of the Earth’s magnetic field.

5. Predict the direction of magnetic forces and induced currents.

6. Describe how magnetic forces are applied in electric motors and generators.

7. Determine currents and voltages produced by transformers.

Answer Key for the Semester Review

Second Semester Review Answers (Blank Questions at End)

Notes on final Homework Assignment

The homework questions are generally written for use with conventional current, and you must adjust your answers accordingly.  For example, if it says that the current is flowing East to West, that means that conventional (proton) current is flowing East to West and when you apply the left hand rules you have to point your finger in the opposite direction, East.

Or, if the question asks you to determine the direction of a current and you use the left hand rule to determine that electrons are flowing North, then to get the right answer you have to indicate that the current that they want, the conventional current, is going in the opposite direction, South.

I think this may apply to questions 4, 5, 6, 7, 8, 9, 14, and 15.

Seniors may do this assignment if they want, but do not have to.

Electricity Review Key

Electricity Review Key 2014

Lab 7 - The Resistance of Light Bulbs

Last lab write-up of the year.
Copy the questions from the linked document and answer them in your lab document.

https://docs.google.com/document/d/1phWUo9RAyrRZdyMLc8q_p6kHhW2aP-dgJtW5K1Rq3n4/edit?usp=sharing

Review Material for the Light Test

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.

Spring Break Homework

Over spring break please watch the video in the link below, play with the simulation (also linked) and answer the 9 questions.  Bring your answers to class.  They will be used in a discussion that requires your preparation. I will check them for completion at the beginning of the activity.

Link to Spring Break Homework

The video is one from a series of 6 created in the 80's about the nature of light.  While the effects are poor by today's standards, the information and what they show about how the scientific understanding develops is good.  The user at the link below has uploaded many old science videos.  The six videos in the wave/particle series on light are at the very bottom of his list.

Link to Videos

Finally, on the first block day after Spring Break the class will engage in a Socratic Seminar on some challenging questions about the nature of light.  The following link to an alternative assignment is required for people who miss that day.

Seminar Make Up Assignment

Lab: The Particle Model for Light

Here is the prompt for the lab report.

Write a  two paragraph conclusion for the lab.  It should focus on the plausibility of light being made of particles and show logical reasoning based on the results of our lab.  You may want to start it with one of the sentences below.

The results of this lab allow me to state that there is evidence that light could be a particle, because…

The results of this lab allow me to state that there is evidence that light probably isn’t a particle, because…

The results of this lab do not allow me to state that there is evidence that light is a particle or isn’t a particle, because… In order to have had more useful data, I would have needed to …

The second paragraph should propose a further test you could perform on either particles or light to confirm or deny the possibility that light is made of speeding “photon” particles.  It would be great if it was an experiment that you could actually perform in the classroom, but it is probably more realistic that it is simply an experiment that people could perform assuming that they had better equipment than we do.

This is not a research project.  I don't expect a historical or established experiment.  In class we listed a number of assumptions necessary to make a particle model for light workable.  Some of these were assumptions about light.  Some were assumptions about the necessary particles.  Focus on one of these assumptions and imagine/invent a test that probes its validity. 

In addition to the conclusion, please include a screen shot of your data table and graph.

	8-10	5-7	0-4
Logic/Conclusion/Analysis	Explanation linking data to conclusion is logical and well expressed.	Conclusion is not strongly linked to the data.  (Data missing.)	Conclusion is unclear or not consistent with the data.
Proposed Procedure	Proposed experiment would add insight to the nature of light, fits the criteria of the assignment, and meaningful explanation of how to interpret the data is provided.	Proposed experiment could provide insight into the nature of light, but experiment or how to interpret it is not clear.  Or experiment doesn’t fit criteria (probably was researched rather than imagined).	Proposed experiment wouldn’t provide insight into the nature of light, or proposed explanation is contrary to a logical interpretation.

Refraction Lab

Here's the Link to the Refraction Lab Report Description.
Please include it in your normal Lab Report Document.

https://docs.google.com/document/d/1-knh8aRX4Hr7FplCFDqN1e7nJbI_9q7ftO1FxGCk2Gs/edit?usp=sharing

Seeing Colors

Here's a good graphic of how the three cones in our eyes are sensitive to the different parts of the spectrum.
for the rest of the explanation look at http://www.physicsclassroom.com/class/light/Lesson-2/Visible-Light-and-the-Eye-s-Response


Also here is what seems like a pretty reputable and thorough explanation of the blue/white, black gold dress.
http://www.wired.com/2015/02/science-one-agrees-color-dress/

Here is an image Mr Williams put together for his psychology class that is a lot more concise tahn the wired article.

Light Unit

Light Unit Goals

1) What is light?

• Be able to describe strengths and weaknesses of the two models of light.
• Be able to give effective examples showing the strengths of each model.

2) How light behaves

• Colors.

1. What are primary, secondary and complementary colors.
2. How are colors produced by dispersion, addition and subtraction of light.

• Reflection

1. What is the law of reflection.
2. Be able to locate images and make ray diagrams for reflection from flat mirrors.

• Refraction

1. What is it?
2. What is Snell’s Law
3.  How did we determine a law for refraction?
4. Be able to solve problems and draw ray diagrams, including for complete internal reflection.

• Lenses

1. Be able to draw ray diagrams for converging and diverging lenses.
2. Identify images as real or virtual.

Sections in book: most of chapters 16-19

Important Dates:

Homework Sets Due:  3/4, 3/9, 4/7

Refraction Lab due 3/13

 Particle Model Lab due 3/19-20
Test 4/9-10

Bev Cleary Presentations4/15-16

Sound Review Handout and Key

A blank form with questions follows after the key.

Sound Review Key and Handout

Speed of Sound Lab

The link below takes you to the questions for the Speed of Sound Lab Report.

Paste them into your lab document and answer them for the next lab report.

https://docs.google.com/document/d/1p0nxp0nsDpM8I6ggPzWdPe98FNx6AAjz3j91H_LJGmc/edit?usp=sharing

Wave Investigation Results Form

Sound Unit

Goals

1. Explain what a wave is.
2. Differentiate between longitudinal and transverse waves
3. Correctly use the vocabulary: medium, pulse, crest, trough, compression, and rarefaction.
4. Define and apply the following wave characteristics: period, frequency, velocity, wavelength, amplitude, and energy.
5. Apply the following relationships: T=1/f and v =f*wavelength.
6. Explain how standing waves are produced and correctly use the terms nodes and antinodes.
7. Explain the following wave behaviors, interference, beats, resonance, doppler effect and sonic booms.

Key dates:
Online Homework : due Wednesday 2/18
Speed of sound lab : performed 2/11-12. due: negotiable, but probably 2/19-20
Test 2/19-20

Reviewing For Semester 1 Final

Here is a link to the solution key for the problem set I distributed in class.
answer key

You can also use UT quest to make a customized review set of questions, focusing on all of the homework questions that you missed the first time around.  Follow these steps  (copied from their help menu)

• Customized Review 
• To help you review for an upcoming test, use the Custom Review option to create customized reviews that focus on your weakest areas. Choose Grade Summary from the left menu, then the Grades by Subject Area link to see the Custom Review option.  

Unit One Goals. 1. Know and apply the definition for average velocity.
2. Know and apply the definition for average acceleration.
3. Differentiate instantaneous and average velocity.
4. Interpret graphs of position, velocity and acceleration, including through the use of slopes and the area under the graph.
5. Draw position, velocity and acceleration graphs for described motion.
6. Know the acceleration due to gravity.
7. Solve problems by using 5 basic mechanics equations.
8. Properly use sign conventions for positive and negative acceleration and velocity.
9. Describe sources of error as either random or systematic and suggest basic ways of reducing error such as controlling variables, doing multiple trials, collecting data over a wide range and using big sample sizes.

Unit 2 Goals:
1. Know that perpendicular vectors are independent
2. Add vectors graphically with parallelogram and head to tail methods.
3. Use trig and Pythagorean theorem to find resultant.
4. Break vectors into perpendicular components graphically and with trig.
5. Solve motion problems in 2D.

Unit 3 Goals

1.      Draw Force Vectors.

2.      Calculate Weight.

3.      Solve Problems with Net Force.

4.      Know that when an object is at rest or moving with constant velocity that F_net = 0 and all of the forces are balanced.

5.      Understand what terminal velocity is and how it is reached.

6.      Be able to explain why all objects in freefall have an acceleration of 9.8 m/s²

7.      Understand that forces are interactions between two things and that each object exerts an equal and opposite force on the other.

8.      Know Newton’s Three Laws of Motion by name.

In general, understand Newton’s 3 laws and apply them to explain motion.

Unit 4 Goals
• Be able to add forces in two dimensions.
• Understand and apply conditions for equilibrium.
• Calculate the frictional force when given the coefficient of friction and vice versa.
• Determine the normal force, and the parallel and perpendicular components of gravity for inclined plane problems and solve for acceleration.
• State and apply equations for centripetal acceleration and force.
• Distinguish between the centripetal force and the fictitious centrifugal force.
• Analyze examples of circular motion in terms of Newton's three laws of motion.

Unit 5 Goals
1.Define and determine work, and energy.
2.List a variety of types of energy and classify them as potential or kinetic.
3.Solve problems using equations for gravitational potential energy and kinetic energy.
4.State and apply the law of conservation of energy.
5.Account for energy in its various forms through a series of transformations, including energy “lost” to heat.
6.Define impulse and momentum and describe how they’re related.
7.State the law of conservation of momentum and use it to solve problems in one and two dimensions.

8.Classify collisions as completely elastic, completely inelastic or somewhere in between.

National Engineering Week

Grant can nominate 10 sophomores and juniors for these exciting field trips.  Let me know if you're interested.

http://www.oregonengineersweek.org/