EDGE
Vibrating objects Produce your
In ao Guitas nibrating
struias pubduce sounds..
what & alibrates in a fute?
In which of the following
Sound travels faster in
Iron water or air
Answers
Answer:
question what & alibrates in a fute
answer A flute produces sound when a stream of air directed across a hole in the instrument creates a vibration of air at the hole. The airstream creates a Bernoulli or siphon. This excites the air contained in the usually cylindrical resonant cavity within the flute.
Answer:
no
Explanation:
Everything is made of molecules—air, solids, and liquids. Sound starts with a vibration that travels through molecules in waves. The waves are much like the ripples created when you drop a rock into water. When a hanger is clanged on a desk, the hanger and the desk vibrate; creating ripples that travel through molecules in the air and the molecules in the desk. The ripple is the sound wave. Sound waves travel through air at 767 miles per hour. Sound travels even faster through solids because the molecules in solids are more tightly packed together than they are in air. For example, sound travels at 8,859 miles per hour through wood. If you lay your head down on a desk and tap the desk, you will hear the tap both through the desk and through the air. Sound also can travel through liquids, though not as quickly as through solids.
How the human ear hears sounds has to do with vibrations, too. When vibrations hit your ear drum, your brain interprets the vibrations as sound.
ACTIVITY INSTRUCTIONS
Set-Up
Hold the ruler on the edge of the desk and bend down the end that is in the air then let it go. The ruler should vibrate and make a sound. Ask your group some or all of these questions: “What is the ruler doing? Is it making a sound? Can you see it vibrating? Could you feel it vibrating?”