When sound reflects off a smooth flat surface, an echo or reproduction of the sound can be heard. Echoes are more noticeable if the surface is far enough away to allow for a time-lag between when the sound is made and when it is hear. (See the lesson onEchoesfor more information.) I...
1: Describe in detail how sound waves are produced and how they travel through air 2: light can be reflected from a small plane mirror,but sound cannot , why? What is meant by the reflection of sound waves? How is the loudness of a sound related to the intensity of waves producing it?
when the head of a drum is hit with a mallet, the drumhead vibrates and produces sound waves. The vibrating drumhead produces sound waves because it moves alternately outward and inward, pushing against, then moving away from, the air next to it. The air particles that strike the drumhead...
Making a room soundproof is about learning how to stop the vibration, because that's what sound is. The nature and location of the sounds you want to control can be important, too. Soundproofing, after all, is the art of blocking, dampening and absorbing sound waves. There's a difference...
What Is an Echo? An echo is a delayed repetition of a sound that occurs when sound travels from a source, bounces off a surface, and is reflected back to that source.An echo requires space to be perceived clearly – at least 50 feet of distance between the sound source and a surface....
By combining the known speed of sound in water with the time the echoes were received, the sonar can calculate the distance the sound has traveled. The equation for determining distance acoustically is:distance = known speed of sound in water * (measured time for echo to return / 2)...
Mary J. Blige also shared reflections on her 1994 soulful hip-hop albumMy Life, which is among this year's inductees. "My favorite lyric from theMy Lifealbum is ‘Life can be only what you make of it,'" she said. This year's selections span more than a century of sound,...
sound. For example, as an ambulance approaches us on the street, the pitch of the siren seems to increase; as it passes, the pitch decreases. This happens because the ambulance is either catching up to the sound waves it is creating (increased pitch) or moving away from them (decreased ...
Describe a vibration that is not periodic. I'm not sure how to answer this! Please help?! Can silence be louder than the sound? What two things affect the loudness of sound? What is the difference between an echo and a reverberation?
Sound is made of types of waves, including mechanical, longitudinal and pressure waves. Vibrating objects create these waves, which subsequently travel through a medium, such as air or water. Jiggle a wiggly spring on one end. The vibrations you create move from one end to the other as energ...