Waves Introduction.notebook November 14, 2014
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1 Waves 1
2 Waves Vocabulary 11/4/13 To watch Untamed Science: 1. Log into Pearson Success Net 2. Go To: Interactive Digital Path 3. Go to the Big Question 4. Click 2nd Untamed Science Tab Extreme Waves Wave Vocabulary.doc 2
3 BIG Questions??? 1.What forms a mechanical wave? Pre Thoughts: Post Thoughts: 2. What are the 3 types of Mechanical waves Pre Thoughts: Post Thoughts: 3
4 BIG Questions??? 1.What forms a mechanical wave? Pre Thoughts: Post Thoughts: 2. What are the 3 types of Mechanical waves Pre Thoughts: Post Thoughts: 4
5 Bell Six BIG Questions??? 1.What forms a mechanical wave? Pre Thoughts: Post Thoughts: 2. What are the 3 types of Mechanical waves Pre Thoughts: Post Thoughts: 5
6 Bell Seven BIG Questions??? 1.What forms a mechanical wave? Pre Thoughts: Post Thoughts: 2. What are the 3 types of Mechanical waves Pre Thoughts: Post Thoughts: 6
7 WHAT IS A WAVE? a disturbance created by a source travels through a medium A ripple forms when raindrops hit the pond. What is the source? What is the medium? (move the green dot here to reveal answer) 7
8 Longitudinal Waves_Notes.doc Surface Transverse 8
9 TRANSVERSE WAVES In which direction is the wave moving? In which direction are the people moving? Animation courtesy of Dr. Dan Russell, Kettering University 9
10 PARTS OF A TRANSVERSE WAVE crest amplitude wavelength trough 10
11 LONGITUDINAL WAVES In which direction is the wave moving? In which direction are the particles moving? (move the green dot here to reveal answer) Animation courtesy of Dr. Dan Russell, Kettering University 11
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16 News You Can Use > Unless you re a competitive swimmer, you probably didn t even know that some swimming pools are faster than others. But if you re an Olympic swimmer, like Missy Franklin, then you know that pool design can affect swimming speed. It all has to do with waves. > Watch this video to see what makes some swimming pools faster than others: Show What You Know Learn more about fast pool design at the link below. Then answer the following questions. > features fast technology/ What is a wave? Swimmers disturb the water and cause waves. How does this affect their speed? Identify features of fast pools and explain how they minimize waves. Why are the outer lanes of a pool often left empty during swimming competitions? Speed Pool 16
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21 Calculating waves Amplitude measures the energy of a transverse wave It is measured from the equilibrium / rest to the crest or trough Wavelength: The distance between two corresponding (similar spots) On the wave. crest to crest trough to trough compression to compression : The number of waves that Frequency pass a certain spot in Unit of measurement is meters / second or hertz Hz a certain amount of time f= Speed wavelength m or hertz Hz / Speed:Is how far the wave travels In a given time Determine speed=wavelength x frequency 1m X 1 Hz Wavelength:Is the distance between two corresponding parts of the wave trough to trough or crest to crest Wavelength= Speed/Frequency or W= S F 21
22 Wave Worksheet (1).doc The pages that follow are the answers! 22
23 11/5/14 23
24 11/5/14 24
25 WAVE PULSES ON A SPRING click for movie by Dr. Michael R. Gallis Penn State Schuylkill 25
26 PERIODIC WAVES ON A SPRING click for movie by Dr. Michael R. Gallis Penn State Schuylkill 26
27 Waves on a string interactive lab Waves on a string Student Phet lab sheet The pages that follow are the answers 27
28 1. What happened to the amplitude? 2. What does that mean about the energy? 3. Where did The energy go? 28
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38 Properties of Transverse Waves Wavelength is the distance from one point to the next point in the cycle Pull Crest Trough Amplitude is the amount the wave is displaced 38
39 Properties of Surface Waves 39
40 PARTS OF A LONGITUDINAL WAVE compression rarefaction wavelength 40
41 Properties of Longitudinal Waves 41
42 The Nature of Sound What is Sound? Temperature What Factors Affect the Speed of Sound It is a disturbance in a medium(solid,liquid, or gas) That forms Vibrations. The repeated. Vibrations form a wave that carries energy It's a longitudinal wave Making Sound Waves A disturbance in a medium. Which moves The mater in the medium parallel to the rest position. When the matter is pushed together they are called a compression. After The compression the Matter bounces back to its rest position called a rarefraction Longitudinal How Sound Waves Travel They carry energy through a wave They vibrate particles in the medium can travel through solids, liquids gasses Stiffness Density Diffraction of Sound Waves Longitudinal waves do not travel in only one direction.they can bend and travel around corners in all directions The colder the temperature the Slower the speed of longitudinal wave. Longitudinal waves travel faster in medium that is more stiff (solid) The more dense a medium is The slower the longitudinal wave Longitudinal 42
43 The Nature of Sound What is Sound? What Factors Affect the Speed Temperature of Sound (solid, That forms Vibrations. The repeated. Vibrations form a wave that carries Making energy Sound Waves The sound waves longitudinal waves travel slower when the temperature is colder. Stiffness Longitudinal waves travel faster through solid stiff matter better than liquids and gasses. How Sound Waves Travel Diffraction of Sound Waves Density : the more dense an area the Slower the sound wave (longitudinal wave) (Mrs. Jeff co H's very dense room compared to Mrs. McClure s 43
44 What is Sound What factors Affects the Speed of Sound Temperature Making Sound Waves Stiffness How sound waves travel Diffraction of Sound Waves Density: 44
45 sound graphic organizer.doc 45
46 what affect loudness E loudness depends on the intensity Of a sound wave The greater the amplitude of the wave The louder it sounds intensity the amount of energy a sound wave has in a sec as it travels Through an area. Pitch the frequency of a longitudinal affects The pitch. The more higher frequent The higher the pitch frequent thethe less lower the pitch. high pitch pitch lower 46
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49 Longitudinal Waves Energy Tuning Fork Lab Compressions Tuning Fork Lab Sheet Frequency Pitch Rarefactions 49
50 11/14/14 50
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54 WHAT DO YOU THINK HAPPENS WHEN A WAVE REACHES A BOUNDARY? 54
55 WAVE PULSE REFLECTION click for movie by Dr. Michael R. Gallis Penn State Schuylkill 55
56 WHAT DO YOU THINK HAPPENS WHEN TWO WAVES MEET EACH OTHER? 56
57 CONSTRUCTIVE INTERFERENCE click for movie by Dr. Michael R. Gallis Penn State Schuylkill 57
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60 Attachments Wave Vocabulary.doc Waves_Notes.doc Speed Pool Wave Worksheet 1.doc Waves on a string Waves on a string Student Phet 3.doc sound graphic organizer.doc Extreme Waves Tuning+Fork+lab.doc
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