Sound and Hearing
Early in the 17th century, Francis Bacon decided that the best way to learn about the world was to discover things for oneself. Since then, science has been a marriage of observation and experimentation. The experiments contained in each chapter allow young scientists to investigate basic principles using common household materials and easy-to-follow instructions. The titles are filled with dozens of color photographs that illustrate experiments and provide a glimpse of everyday and extraordinary uses of the subject. In addition, engaging features such as "Did You Know?" boxes provide fascinating facts. The "In Focus" sections offer in-depth looks at specific features of each subject. "In The Real World" boxes highlight pivotal experiments by real scientists.
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WHAT IS SOUND?
Making a String Telephone 1
HIGH AND LOW
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acoustics air vibrate anvil Austrian physicist Ernst blindfold bones bottle bounce back BOUNCING SOUND called clarinet deaf different materials Different notes Doppler effect eardrum Earth echoes elastic band experiment fly faster flying at Mach focus friend to tap ft per second galaxies hammer hear sounds HIGH AND LOW high in pitch high-pitched highest sound human ear inner ear Listen loud low in pitch megaphone metal molecules to move musical note ocean original sound ossicles physicist Ernst Mach raider reach your ear red shift redder seismic waves Seismologist sharp shove shock waves SLEEPING PIRATE solids Sonar Sonic boom Sound barrier sound cannot move Sound cannot travel sound travels sound waves bounce Sound waves move sounds as high space speed of sound sprinkles squeals squeezed stereo stirrup stretched string Supersonic Take it further tin lid tiny Try tapping tube Ultrasound vacuum vibrations travel voice whales wooden spoon