Sound Uncovered: An Interactive Book for the iPad Explore the surprising side of sound with Sound Uncovered, an award-winning interactive collection from the Exploratorium featuring auditory illusions, acoustic phenomena, and other things that go bump, beep, boom, and vroom. Hear with your eyes, see with your ears, test your hearing, make and modify recordings—this app puts you at the center of the experiment. Why do some noises seem louder at night? Are there secret messages in music played backward? How can Siri understand different accents? And it's free! Sound Uncovered won the Jackson Hole Science Media Symposium's 2014 Best Online and Interactive Media Award; the American Association of Museum's 2013 Silver MUSE award, Mobile Applications; and Museum and the Web's 2013 Best of the Web Award, Mobile.
Funciones de la música: Why do seismic waves travel a curving path through the Earth? Refraction For background on this animation series, download Background from the Resources box.Animations are available for preview in embedded YouTube. To download, right click the 'Quicktime Animation' link and choose 'Save Target As' (PC) or 'Download Linked File' (Mac).Send us feedback. Travel times through different media This animation shows what happens to seismic waves as they encounter a boundary between a slower and faster layer in the Earth with introduction to Snell’s Law. Quicktime Animation (4 MB) Seismic Sprint—race to the seismometer The animation on the left describes the relative speeds of the direct, critically refracted and head waves. Quicktime Animation (1 MB) Seismic Sprint—graphing the seismograms Using the same seismic ray paths, the animation below adds a graph to see how data recorded show the distance transition of first arrival wave paths. Quicktime Animation (3 MB) Direct ray races 5 different refracted rays Quicktime Animation (2 MB) Quicktime Animation (3 MB)
How do P & S waves give evidence for a liquid outer core? Shadow Zones For background on this animation series, download Background from the Resources box.Animations are available for preview in embedded YouTube. To download, right click the 'Quicktime Animation' link and choose 'Save Target As' (PC) or 'Download Linked File' (Mac).Send us feedback. Intro to Shadow Zones The seismic shadows are the effect of seismic waves striking the core-mantle boundary. Quicktime (5.73 MB) Seismic Shadow Zones vs Light Shadows The wave properties of light are used as an analogy to help us understand seismic-wave behavior. Quicktime (9.36 MB) Shadow Zone Rollover Flash interactive rollover shows the different P and S phases and their respective shadow zones. Flash (154 kB) P Phases and the Shadow Zone Animation addresses 5 common variations of P-type seismic body waves. Quicktime (6.31 MB) S Phases and the Shadow Zone Animation addresses 3 common variations of S-type seismic body waves. Quicktime (4.49 MB) Please send feedback to Jenda Johnson.
Modeling Earthquake Waves | Earth Science Week An earthquake occurs when massive rock layers slide past each other. This motion makes enormous vibrations, which travel from the site of the earthquake in waves. The waves (seismic waves) travel all the way through the Earth. Seismologists can record these waves when they reach Earth’s surface using seismographs. Earthquakes generate three kinds of waves: Compressional waves (P waves) travel the fastest. Shear (S) waves travel more slowly than P waves. Materials Two Slinkys™Flat, smooth surfaceNotebook and penSafety goggles Procedure Work with a partner.
Lesson Plans On Sound And Acoustics For Grades 4 Through 6 Acoustics is the study of the properties of sound and how sound is transmitted through space. Engineers working on airplane design pay close attention to the acoustics of the airplane cabin in an effort to keep passengers as comfortable as possible. In this module, students develop, test, and modify designs for a quieter airplane cabin. Students develop a conceptual understanding of science ideas related to sound waves. Students apply these ideas during the engineering design process. NGSS addressed by this module: MS-ETS1-1 MS-ETS1-4 MS-PS4-1 MS-PS4-2 MS-LS1-8 Grade Band: 4-8 Download the Lessons Entire Unit: Quieter Cabin DAYS 1–10: Quieter Cabin Teacher Handbook Download DAYS 1 & 2: How Sound Travels Away from an Airplane Engine Students are introduced to the design problem of creating a quieter cabin for airplane passengers. DAYS 4 & 5: How Sound Travels through Cabin Walls Students engage in a modeling activity and an investigation to determine how sound waves travel through solids.
Sound Booth Construction (From TeachEngineering.org. Lesson contributed by the Electrical and Computer Engineering Department, Drexel University GK-12 Program) Update 1/31/14: Activity and worksheet no longer available on TeachEngineering site. For additional sound or acoustic engineering resources, click HERE for Sound Booth Engineers, a design activity for second grade science students from UNC-Chapel Hill. In this activity, students in grades 7 – 9 explore the sound-dampening ability of numerous materials by designing and prototyping model sound booths. Grade level: 7-9 Time: 3 hours Learning Objectives After this activity, students should be able to: Explain how surfaces reflect sound waves.Develop blueprints for a structure to be constructed.Explain why certain materials absorb more sound than others.Write a formal lab report. Standards International Technology Education Association F. Common Core State Mathematics Standards 12. National Assessment of Educational Progress Materials For each group: Procedure
New Tech Could Read Books Without Opening Them Using technology akin to X-ray vision, scientists can read closed books, identifying letters printed on stacks of paper up to nine sheets thick. This finding could lead to office machines that can scan reams of paper at once, or help researchers scan ancient books that are too fragile to open. The researchers also said it could perhaps help spies read mail without opening envelopes. The prototype device uses terahertz radiation, the band of electromagnetic radiation between microwaves and infrared light. The new system relies on how different chemicals absorb different frequencies of terahertz radiation to varying degrees, the scientists said. Moreover, the new system exploits the fact that air and paper each bend light to a different degree, and that pages of a book trap air pockets between them. The researchers used a terahertz camera to scan a stack of card-size, 300-micron-thick sheets of paper. One application of this work could involve reading ancient and fragile texts.
Free K - 12 Common Core Lesson Plans and Ideas Middle School Physical Sciences Scroll Up Scroll Down Waves and Their Applications in Technologies for Information Transfer back Use mathematical representations to describe a simple model for waves that includes how the amplitude of a wave is related to the energy in a wave. 5 Lesson(s) Properties of Waves: Making Waves Visible 7th Grade Science » Unit: Waves: An Introduction and Exploration of Wave Properties Leigh Roehm Saline, MI Environment: Suburban Big Idea: Wave properties need to be visible to students to promote understanding. Standards: Favorites (96) Resources (25) Reflections (2) The Electromagnetic Spectrum Students review characteristic properties of model using a fun vocabulary strategy and create a graphic representation of electromagnetic waves and their uses. Favorites (34) Resources (35) Reflections (1) Wave Behavior Lab Rotation: Day 1 Favorites (39) Wave Behavior Lab Rotation: Day 2 RST.6-8.7 WHST.6-8.2.a MS-PS4-1 MS-PS4-2 SP2 SP5 XC-P-MS-4 Favorites (24) Resources (37) Ryan Keser Kindergarten
Scientists have found a way to photograph people in 3D through walls using Wi-Fi Wi-Fi can pass through walls. This fact is easy to take for granted, yet it's the reason we can surf the web using a wireless router located in another room. But not all of that microwave radiation makes it to (or from) our phones, tablets, and laptops. Routers scatter and bounce their signal off objects, illuminating our homes and offices like invisible light bulbs. Now, German scientists have found a way to exploit this property to take holograms, or 3D photographs, of objects inside a room — from outside it. "It can basically scan a room with someone's Wi-Fi transmission," Philipp Holl, a 23-year-old undergraduate physics student at the Technical University of Munich, told Business Insider. Holl initially built the device as part of his bachelor thesis with the help of his academic supervisor, Friedemann Reinhard. Holl says the technology is only in its prototype stage and has limited resolution, but he is excited about its promise. How to see through walls with Wi-Fi