Mr. Rogers' Honors Physics

Syllabus 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter
Waves (14)
Sound (15)
Light (16)
Lenses (18)
Electricity (13&14)

Sound-- Chapter 15

Relevance: Waves are the key to understanding modern wireless communication, musical instruments, and optics..

SC Standards :

Indicators

P-3.5 Explain the factors involved in producing a change in momentum (including impulse and the law of
conservation of momentum in both linear and rotary systems).
P-3.6 Compare elastic and inelastic collisions in terms of conservation laws.


   

Practice Test Study Guide

Objectives

Essential Question: Are there sounds in outer space?

Properties and Detection of Sound

  1. State that sound waves are a longitudinal pressure wave.
  2. State that the speed of sound depends on the medium it is transmitted through.

    high density: slows a wave down because the media the wave passes through has more inertia

    high stiffness ( force/deformation): speeds a wave up

    Media Stiffness (bulk modulus of elasticity, N/m^2) Density (kg/m^2) Speed of Sound (m/s)
    air 5 (10^4) 1.2 340
    water 2 (10^9) 1000 1500
    steel 2 (10^11) 7850 6100

     

  3. Explain why the wavelength of a sound is altered when it is transmitted through different media because the frequency is not. Since frequency (number of peaks per second) is constant, wave length is directly proportional to the speed of sound in a material as shown:

    l = (1/f) v

    where f = a constant

  4. Explain the difference between hearing by bone transmitted sound vs. air transmitted sound.
  5. Explain why a noise transmitted in water sounds different (somewhat lower pitched) than the same noise transmitted in air. The wavelength of a sound traveling in water will be longer than a wavelength traveling in air.
  6. Explain why audible sound could not be transmitted through outer space. (see Stokes' law of sound attenuation.)

    extreme low density of space: While there is some matter in outerspace, the density is near zero causing sound to be almost instantly attenuated (reduced to essentially zero loudness)

    extremely low frequency mechanical waves are attenuated less: these extremely low frequency waves can travel longer distances but are far below human hearing levels.

  7. Solve problems using the speed of sound. v = l f

    given any two of the quantities v, l, or f solve for the third

     

Homefun (formative/summative assessment): Read sections 14.1, practice problems 1, 3, 5 page 405

 

 

Formative Assessment: Physics Investigation

Title  
Research Question  
Background  
Hypothesis  
Data, Calculations  
Conclusions  

Follow up Questions

 
Deliverables  
Resources/Materials  

 

 

Essential Question: H?

 

Perceiving Sound

  1. S
 

 

Homefun (formative/summative assessment) .

 

 
Essential Question: C?

Sn

  1. D
     

Homefun (formative/summative assessment):

 

Essential Question: How can you best prepare for the test?

Review

Formative Assessments:

  1. Work review problems at the board

  2. Work practice problems.

Metacognition Problem Solving Question: Can I still work the problems done in class, several hours or days later? Some amount of repetition on the exact same problems is necessary to lock in learning. It is often better to thoroughly understand a single example of a problem type than to work example after example understanding none of them completely.

Relevance: Good test preparation is essential to performance in physics class.

Homefun (formative/summative assessment): turn in on the day stapled to the back of the test.

Summative Assessment: Unit exam objectives 1-23

 
Mr

SAM Team--Southside High School's STEM and Computer Science extra-curricular club (Mr. Rogers Sponsor)

Mr. Rogers' Twitter Site

Mr. Rogers Teacher's Blog

Mr. Rogers T-shirts

Mr. Rogers Information for Teachers

Mr. Rogers Science Fair Information

Check out other web sites created by Mr. R:

Check out Articles by Mr. Rogers:

 
Insultingly Stupid Movie Physics is one of the most humorous, entertaining, and readable physics books available, yet is filled with all kinds of useful content and clear explanations for high school, 1st semester college physics students, and film buffs.

It explains all 3 of Newton's laws, the 1st and 2nd laws of thermodynamics, momentum, energy, gravity, circular motion and a host of other topics all through the lens of Hollywood movies using Star Trek and numerous other films.

If you want to learn how to think physics and have a lot of fun in the process, this is the book for you!

 

First the web site,

now the book!


Mr. Rogers Home | Common Sylabus | AP Comp Sci I | AP Comp Sci II | AP Physics Mech | AP Physics E&M | AP Statistics | Honors Physics|IB Design Tech | Southside

[ Intuitor Home | Physics | Movie Physics | Chess | Forchess | Hex | Intuitor Store |

Copyright 1996-2011 T. K. Rogers, all rights reserved. Forchess is a registered trademark of T. K. Rogers.
No part of this website may be reproduced in any form, electronic or otherwise, without express written approval.