# Monday, February 23rd Entry Task Blast from the past!!! What are the two kinds of earthquake waves you learned about last year? Schedule: 15.1 Notes 15.1.

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Monday, February 23rd Entry Task Blast from the past!!! What are the two kinds of earthquake waves you learned about last year? Schedule: 15.1 Notes 15.1 RSG Objective: I will compare and contrast transverse waves and longitudinal waves Homework: Read pages Please have on desk: Journal open to vocab, sharpened pencil

Explain how all mechanical waves are similar Schedule: Review 15.1 Wavelength, Frequency and Amplitude Objective: I will calculate a wave’s speed, frequency, and wavelength Homework Re-read pages Do you know the material? Please Have on Desk: Journal, sharpened pencil

15.2 Notes Waves have Measurable Properties
Waves have measurable properties like height and speed. The CREST is the highest point of a wave. The TROUGH is the wave’s lowest point

15.2 Notes Waves have Measurable Properties
AMPLITUDE - the distance between a wave’s resting point and the crest or trough Amplitude indicates how much energy a wave is carrying. WAVELENGTH- the distance from one CREST to the next CREST.

15.2 Notes Waves have Measurable Properties
FREQUENCY- Number of CRESTS (or troughs) that pass a given point every second. WAVES have measurable properties.

Waves have Measureable Properties
What are 3 main differences between Tsunamis and normal ocean waves? Use vocab. from

Waves have Measureable Properties
What are 3 main differences between Tsunamis and normal ocean waves? 1. Different forces create Tsunamis 2. Tsunamis have longer wavelengths 3. Tsunamis transfer more energy (have higher amplitudes near shore)

Wednesday, February 25th Entry Task Draw a wave and label: - crest - trough - amplitude - resting point - wavelength Schedule: Investigate Frequency Lab Objective: I will explain how frequency and wavelength are related. Homework: Completed lab handout due tomorrow Please have on Desk: Pencil

Thursday, February 26th Entry Task Would the relationship between wavelength and frequency in your lab change if you changed the amplitude (starting angle)? Explain why or why not. Schedule: 15.2 math practice 15.3 notes Objective: I can calculate wave speed, frequency, and wavelength using the Homework Re-read pages 504 – 508. Please have on Desk: Frequency lab, pencil, textbook

Math Practice A wave with a frequency of 14 Hz has a wavelength of 3 meters. At what speed will this wave travel?

Math Practice The speed of a wave is 65 m/sec. If the wavelength of the wave is 0.8 meters, what is the frequency of the wave?

Math Practice A wave has a frequency of 46 Hz and a wavelength of 1.7 meters. What is the speed of this wave?

Math Practice A wave traveling at 230 m/sec has a wavelength of 2.1 meters. What is the frequency of this wave?

Math Practice A wave with a frequency of 500 Hz is traveling at a speed of 200 m/s. What is the wavelength?

Math Practice A wave has a frequency of 540 Hz and is traveling at 340 m/s. What is its wavelength?

Math Practice A wave has a wavelength of 125 meters is moving at a speed of 20 m/s. What is it’s frequency?

Math Practice A wave has a frequency of 900 Hz and a wavelength of 200 m. At what speed is this wave traveling?

Math Practice A wave has a wavelength of 0.5 meters and a frequency of 120 Hz. What is the wave’s speed?

Math Practice Radio waves travel at a speed of 300,000,000 m/s. WFNX broadcasts radio waves at a frequency of 101,700,000 Hertz. What is the wavelength of WFNX’s radio waves?

Identify the 5 different wave behaviors and write them on your notes sheet Define, give examples (draw pictures to help you) and explanations. Do NOT just copy the book!

Wave Behaviors Reflection
When a wave hits a medium it can’t go through, it bounces off that medium It is the reason we see ourselves in a mirror, see colors and hear an echo.

Wave Behaviors Refraction
When a wave hits a new medium it slows down or speeds up, this causes the wave to bend. It is the reason things look bigger or out of place when you look at them through water.

Wave Behaviors Diffraction
When a wave hits a barrier that has an opening, the wave spreads out after it goes through the opening It is the reason you can still hear someone talking in Mr. McWhirter’s classroom, even though there are barriers between us.

Wave Behaviors Constructive Interference
When waves meet and the result is a wave with a higher amplitude It is the reason surround sound works. Sound waves meet and create a fuller, richer sound. It is also the reason that innertubing behind a boat can be so fun

Wave Behaviors Destructive Interference
When waves meet and the result is a wave with a lower amplitude It is the reason a stereo may be loud in one part of the room, but quiet in another part. Sound waves meet and create a quieter sound Noise canceling head phones also work because of this behavior of wave

Friday, February 27th Entry Task Describe what happens when waves diffract. Turn your journal in to the side counter. Schedule: 15.2 Quiz Waves summary Bill Nye “Waves” Objective: I will reinforce my understanding of waves. Homework: Re-read Chapter 15 Please have on desk: Pencil and calculator

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