![]() They impact how we perceive sound and are essential considerations in fields such as acoustics, architecture, engineering, and the design of sound systems and concert halls. These phenomena of reflection, refraction, and diffraction play a crucial role in the behavior and propagation of sound waves in various environments. For example, if you hear someone's voice from behind a wall, the sound waves diffract around the corners of the wall, allowing you to perceive the sound. This phenomenon allows sound to be heard even if the sound source is not directly visible. When sound waves encounter an obstruction or opening, they diffract, meaning they bend around the edges of the obstacle or opening and spread out. Refraction can have significant effects on the transmission of sound, such as the bending of sound around obstacles or the focusing of sound in specific directions.ĭiffraction is the bending or spreading out of sound waves as they encounter an obstacle or pass through an opening that is comparable in size to their wavelength. This bending of sound waves is due to the variation in their speed as they move from one medium to another. When sound waves encounter a medium with different characteristics, their speed changes, causing the waves to change direction. Refraction refers to the bending or changes in the direction of sound waves as they pass from one medium to another with different properties, such as density or temperature. Reflective surfaces, such as walls, floors, and ceilings, can affect the acoustics of a room by reflecting or absorbing sound waves. For example, when sound waves reflect off a solid wall or a mountain, they reach our ears after bouncing back, creating a distinct echo. This phenomenon allows us to hear echoes. The angle of incidence (the angle at which the sound wave strikes the surface) is equal to the angle of reflection (the angle at which the sound wave reflects off the surface). Reflection occurs when sound waves encounter a boundary or obstacle and bounce back. Let's explore each of these phenomena in relation to sound waves: Learning Target #7 will be discussed in class.Sound waves exhibit reflection, refraction, and diffraction, just like other types of waves. LT #6: How do We See Color? (Rods and Cones in the Eyes) LTs #1 and #3: Sound Diffraction and Interference LT #5: Echolocation: Blind Man Uses Bat-Like "Vision" LT #5: What Does an Echo Look Like in Echolocation? ![]() LTs #1, #2, #3 and #5: Reflection of Sound and Echo LTs #1, #2, and #4: Sound Wave Behaviors: Reflection, Absorption, and Transmission How it works: The refraction phenomenon occurs whenever waves travel from one medium to another in which the velocity of the wave changes. LTs #1 and #2: Differences between Reflection, Refraction, and Diffraction of LIGHT LT#4: How Light Travels LT#4: How Light Travels: Opaque, Transparent, and Transluscent Objects LT #4: How Sound Travels Through Different Media LT #4: How does Sound Travel? I can develop and use a model to compare and contrast how light and sound waves interact with matter.I can illustrate and explain how color is seen.I can illustrate and describe what happens when a sound echoes.I can explain how light and sound travel through various materials.I can describe the reflection, refraction, absorption, and diffraction of light and sound waves.I can explain the difference between light and sound waves.I can define reflected, refracted, absorbed, diffracted and transmitted.LEARNING TARGETS: ( Clarification statement: Includes echo and how color is seen, but does not cover interference and scattering) ![]() STANDARD: S8P4 Obtain, evaluate, and communicate information to support the claim that electromagnetic (light) waves behave differently than mechanical (sound) waves.ĮLEMENT: S8P4.d Develop and use a model to compare and contrast how light and sound waves are reflected, refracted, absorbed, diffracted or transmitted through various materials. Updated : Johns Unit 4: Characteristics of Waves S8P5.a- Fields Exist Between Objects (Gravitational, Magnetic, Electrical).S8P4.g- Lenses and Possible Technological Applications.S8P4.f- Use a Model to Predict and Describe the Relationships Between Wave Properties and Energy.S8P4.e- Density of Media and Wave Behavior.S8P4.d- Compare/Contrast Sound & Light Waves.S8P4.c- Practical Applications of the Electromagnetic Spectrum.S8P4.b- Electromagnetic Spectrum and Energy. ![]() S8P4.a- Types of Waves & Wave Properties.S8P3.a- Analyze Speed, Distance, Velocity & Acceleration.S8P2.c- Forms & Transformations of Energy.S8P2.a- Graphing Kinetic & Potential Energy.S8P1.f- Conservation of Matter and Mass. ![]()
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