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Unit 8: Wave Motion

 Day Friday, April 15 Day 0 of U8 (last day of U7) Focus Question(s): What is a wave like? How is it related to a vibration? What moves? What did we learn this unit? Activities: Start Unit 8: Wave Motion Mass on a Spring: a wiggle in time Sinusoidal; vibration about a fixed position; regular and repeating (periodic) Period, Amplitude, Damping A Wave = a wiggle in time extending across space Medium vs. Wave Five characteristics of waves: Regular and repeating disturbance of the medium Particles of medium vibrate about a fixed position Sinusoidal Moves by means of particle-to-particle interaction Transports energy without transporting matter Wave vs. Pulse Collect Lab Notebooks; Test Formation (2:10 - 2:15 PM) Test on Unit 6 (60 minutes) Homework:    Read Chapter Chapter 14.1 of your Textbook (pp. 386-394) (or online alternative - see below) Helpful Links:

 Day Tuesday, April 19 1 Focus Question(s): What wave properties distinguish one wave from another wave? What are the important wave quantities and how are they related? Activities: Review the Nature of a Wave (5 characteristics); Think Sheet Wave Properties and Mathematics Think Sheet: Wave Properties Mathematics of Waves; Three Equations Lab WM1: Speed of a Wave Homework:    Minds On Physics - Waves Module; do WM1, WM3, WM4 Read Textbook - Chapter 15.1: pp. 408-417 (or online alternative - see below) Helpful Links:

 Day Thursday, April 21 2 >> Thursday, April 21 << Focus Question(s): How are waves categorized? What are the characteristic behaviors of waves? Activities: Speed of a Wave - p. 4 of Packet Mathematics of Standing Waves - p. 6 of PacketDesmos: wave equation Lecture/Demonstration: Wave Behavior InterferenceFree- and Fixed-End ReflectionBoundary Behavior (transmission/reflection)Desmos interference Boundary Behavior - pp. 7-8 of Packet Homework:    Minds On Physics - Waves Module; do WM2, WM5, WM6 Read Textbook - Chapter 15.2-3: pp. 418-426 (or online alternative - see below) Helpful Links:

 Day Monday, April 25 3 Focus Question(s): What is the electromagnetic spectrum and what are the frequency-wavelength-speed-energy trends? What is polarized light and how is it created?What are the primary colors of light and what is the result of mixing them in equal and unequal intensities? Activities: Review Wave Behavior: Packet pp. 7-8 Discuss Electromagnetic and Visible Spectrum; wavelength, frequency, speed, energy relationships Video: Is light a wave or a particle? Polarization: demos, discussion, Packet: pp. 9-10, simulation Color     == Video: How Do Our Eyes See Color?     == Physiology; Cones, Wavelength, and Color     == Three Primary Colors of Light; demo; Color Wheel     == Physics Interactive: RGB Color Addition Homework:    Minds On Physics - Waves Module; do WM1- WM6 and LC1 - LC2. Read Textbook - Chapter 22 (pp. 630 - 633; pp. 641-644) (or online alternative - see below) Helpful Links:

 Day Wednesday, April 27 4 Focus Question(s): How can color subtraction rules and complementary color concepts be used to predict how color pigments interact with light?How can color subtraction rules and complementary color concepts be used to predict how filters interact with light? Activities: Color Subtraction w/o RGB == Viewed in Another Light (pp. 3-4 of Packet) == Review Hit the Lights Painting with CMY Pigments and Paints == Demos: Duck, Newspaper Ad == Pigments and Paints (pp. 5-6 of Packet) Lab WM7 Filtering Away (Light Source)If time allows: Minds On Physics Homework:    Minds On Physics; do WM1- WM6 and LC1 - LC7. Read Textbook - pp. 21-23 (or online alternative - see below) Helpful Links:

 Day Friday, April 29 5 Focus Question(s): How can color subtraction rules and complementary color concepts be used to predict how color pigments interact with light?How can color subtraction rules and complementary color concepts be used to predict how filters interact with light? Activities: Color Subtraction w/o RGB == Rules/Equations: p. 2, Q#6, Q#8 == Viewed in Another Light (pp. 3-4 of Packet) == Review Hit the Lights Painting with CMY Pigments and Paints == Pigments and Paints (pp. 5-6 of Packet) == Demos: Duck, Newspaper Ad == Packet, pp. 5-6, Q#1, Q#4, Q#5 == Filters, p. 6, Q#7 Lab WM7 Filtering Away (Light Source)If time allows: Minds On Physics Homework:    Minds On Physics; do WM1- WM6 and LC1 - LC8. Read Textbook - pp. 21-23 (or online alternative - see below) Helpful Links:

 Day Tuesday, May 3 6 Focus Question(s): How do colored shadows form?What is the Doppler effect? Why and when does it occur? What are the applications of the Doppler effect? Activities: Review Pigments and Color Subtraction: p. 6, Q#5Shadows - demo; pp. 7-8 of PacketWork Time (15-20 minutes): Finish Lab WM7 Filtering Away MOPs: Mission LC9 Wave Intensity: Sound; Decibel Scale; mathematics Homework:    Minds On Physics; do WM1- WM6 and LC1 - LC9, SM4 (to be collected soon)Lab Notebooks will be collected Helpful Links:

 Day Thursday, May 5 7 Focus Question(s): What is the Doppler effect? Why and when does it occur? What are the applications of the Doppler effect?How is the perceived frequency mathematically related to the actual frequency of the source, the speed of the source, and the What variables affect the intensity of a sound wave or light wave?How can the deciBel scale be used to express the intensity of a sound wave? Activities: Intensity and distance; deciBel Scale; mathematics Doppler Shifting: Conceptual Doppler Shifting: MathematicsCollect Lab Notebooks Quiz Homework:    Minds On Physics; do WM1- WM6 and LC1 - LC9, SM3 - SM4 (due next time) WebAssign: Doppler ShiftWebAssign: DeciBels and Intensity Helpful Links:

 Day Monday, May 9 8 >> Monday, May 9 << Focus Question(s): How can the deciBel scale be used to express the intensity of a sound wave?How can the Doppler effect be used to determine the age of the universe? Activities: Return Lab NotebooksCollect MOP Codes Doppler Mathematics: Packet, Q#2-4Bow Waves/Shock Waves/Mach Number; Packet, Q#1-3 Age of the Universe Lab (this will take a while)As time allows, Work Time: WebAssigns WebAssign: Big Five Makeup Quiz Homework:    WebAssign: Doppler ShiftWebAssign: DeciBels and Intensity Helpful Links:

 Day Wednesday, May 11 9 Focus Question(s): How can the Doppler effect be used to determine the age of the universe? Activities: Doppler Shift Equation for Moving Observer Practice: Internet Problem #3 Doppler and Shock Waves, Q#3 Discuss Age of Universe Hubble Red Shift Activity Work Time: WebAssigns WebAssign: Big Five Makeup Quiz Homework:    Complete WebAssign Work Complete Lab Packet (Age of Universe, etc.)Prepare for the Exam Helpful Links:

 Day Friday, May 13 10 Focus Question(s): How can a two-point source interference pattern be used to determine the wavelength of light? What did we learn this unit? Activities: Unit 9 Activity: Standing Wave Patterns, Harmonics, Mathematics Unit 8 Test Homework:    None Helpful Links:

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