Unit Four Review and Answers

Here is a link to the Unit Four Review Questions.

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

Gecko Friction

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

Friction Lab

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. 12.  Please include it in your Google Drive Lab Document as the first item.

Sixth Period Physics with Second Grade Visitors

Unit 4: More topics in Forces

This unit focus on various additional topics in forces including inclined planes, adding forces in two dimensions, friction, circular motion, and Newton's Universal Law of Gravitation.  

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.

• Solve problems with Newton's Universal Law of Gravitation.

Important Dates
Friction Lab : due Friday Dec. 12
Homework: Nov. 24 and Dec. 15, both at 10:00 pm
Unit Test: Dec. 18 and 19

This unit corresponds to parts of chapters 6, 7 and 8 in the book.

Review Packet for Forces Unit

The test will be Nov. 18 and 19.  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 Two - 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 diagrams, 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 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.

Lab Due Date:  Nov. 4/5 

Homework due in the evening of Oct. 27, Nov 3, and Nov. 13

Test Date Nov. 18 and 19  

More Two Dimensional Review

Answers are on the last page.Motion in 2 Dimensions Practice

Vector Review Key

Review Answers 2013

Unit Two – Vectors and Kinematics in Two Dimension

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/

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 - Thursday Oct. 16 and Monday Oct. 20

Homework due 10:00 pm Monday the 6th, and Monday the 13th.

Kinematics Review Key

Kinematics Review Key 2013

Galileo's Dilemma - First Lab Report

You will submit this lab report via google docs.  Please follow the instructions on the blog to create a document to share with me.  Then follow the link below, and copy and paste the questions from lab description into your new document, and answer the questions.  You will add all future lab reports to this single document.

We will talk about the details of both submitting the lab, and answering the questions in class in depth. The lab is due Monday Sept. 15.

https://docs.google.com/document/d/114amQvzVPm_2Ss1b1aOOBFwS4L9UH3Xa3WqIFwzllqA/edit#

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.

Installing Logger Pro on your own 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 3.8.7 with sample movies (Windows)
Link: http://www.vernier.com/d/8ao60
Password: 

Logger Pro 3.8.7 with sample movies (Mac OS X)
Link: http://www.vernier.com/d/v5rhj
Password: 

Ask me for the password.

Submitting lab reports

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____

Don't use my normal email to share it.  I made my google account back when pps emails went like this:

emedley@pps.k12.or.us

Make an Online 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 Wednesday. On Thursday/Friday we will log in as a class, 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 2232014. 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 2014 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                      Thurs/Fri, 9/4-5

Lab 1 data presentation            Tues/Wed, 9/9-10

Lab 1 report                            Mon, 9/15

First Quest hmwk assignment   Wed. 9/17
Second Quest hmwk assig       Mon. 9/22

Unit Test                                  Thurs/Fri 9/25-26

Welcome to Physics

The 2013-2014 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 Monday Sept. 15.) 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

Lecture Notes

Here is a collection of the Lecture Notes that Mr. Larsen has created throughout the semester.  Be sure to thank him for them.

2nd Semester Lecture Notes

Answer key for the review

Second Semester Review Answers (Blank Questions at End)

Magnetism Unit

Magnetism (Ch. 24,25)
Homwork due 6/8/2014
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.

Electricity Review Key

Electricity Review Key 2014

New Version of Logger Pro

Here are links to download the software you requested from
Vernier Software & Technology. After the file has downloaded
to your computer, double-click the file, and enter the password to
install the software.

To get the password please contact Mr. Medley

========================================
Logger Pro 3.8.6.2 with sample movies (Windows)
Link: http://www.vernier.com/d/5f7jk
Password: 

Logger Pro 3.8.6.2 with sample movies (Mac OS X)
Link: http://www.vernier.com/d/knvdh
Password: 
========================================

Detailed Step-by-Step Guide
Do you need more detailed instructions on how to download
and install our software? Please read our detailed download
instructions online:
http://www.vernier.com/til/2069/

Please let me know if you have any problems with the download
or if you have any other questions about our products.

Vernier Support Specialist
info@vernier.com
Vernier Software & Technology
Toll free: 888.837.6437

Electricity Unit

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 5 and May 18

Lab due May 15/16 tentative

Test May 21/22

Mythbusters Handout

Some people have asked for the guidelines on the Mythbusters Assignment.  This is the assignment that periods 4 and 5 are doing - the alternate to the second grade visits.

Here's the link.

Light Review Key

Light Review Key 2014

Summary of Light Experiments

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. We will check them for completion at the beginning of the activity.

Link to Spring Break Homework

If you have missed any of the previous videos, they can be found at this link.

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

Modeling a Particle Model For Light - Lab Report

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.

Reflection and Refraction Review Key

Sorry for the poor quality scan.

Refraction and Reflection Review Key

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:  3/3, 3/10, 4/8

Refraction Lab due 3/10

 Particle Model Lab due 3/20-21
Test 4/10-11

Bev Cleary Presentations4/15-16

Sound Review Sheets Answer Key

Sound Review Sheets Answer Key

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

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 evening 2/5 and Wednesday 2/12
Speed of sound lab : performed 2/6-7. due: negotiable, but probably 2/11-12
Test 2/13-14

Wave Speed Data Collection Form

Semester 1 review key

Semester 1 Review Keykey

Reviewing for final

Answers to Multiple choice review questions

1.d 2. d 3.a 4.c 5.a 6.ad 7. bc 8.ab 9.c 10. c
11. a 12.d 13.d 14. d 15.c 16. c 17. b 18.a 19.c 20.c
21. c 22.c 23.b 24.d 25.c 26.c (b is not a well worded option.  It would be better to have said mechanical energy is either potential or kinetic, which would more clearly have been true.  While I categorize internal "heat" energy as kinetic, for some people this is a stretch.)  27.d 28.a 29.c 30.b
31. d  32.b 33.c


You can also use 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 1 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.