Reflection of sound waves off of surfaces can lead to one of two phenomena - an
echo or a reverberation. ... Echoes occur when a reflected sound wave reaches
the ear more than 0.1 seconds .... This is depicted in the diagram at the right.
Sound waves are longitudinal waves that must pass through a medium, such as
air. Echoes are reflections of sounds. The frequency of ultrasound is above 20 ...
Echoes are created by sound waves being reflected off of a large obstacle.
Conditions have to be just right for the echo to be heard as a separate sound....
www.wikiradiography.com/page/Basic Ultrasound Physics
Defining Ultrasound Ultrasound uses sound waves. ... Ultrasound uses a pulse-
echo technique of imaging the body. ... and the individual movement of each
particle in the diagram is/ can be described mathematically by the wave equation.
Draw the diagram of a wave and mark its amplitude on it. Sol. ..... Sol. On a hot
day, echo is heard sooner since velocity of sound increases with temperature.
May 6, 2000 ... A condensation is part of a sound wave where the density is higher than .....
because one must be too close for the echo to be distinguished.
Feb 4, 2015 ... A boat is fitted with an echo-sounder which uses ultrasound with a ... The
diagrams represent sound waves displayed on an oscilloscope. 16.
Get a FREE sound waves lesson plan, or one of many other physical science
lesson ... Under the diagram, students should describe what is observed as they
... Elicit students' ideas about real-world examples of this—for example, echoes.
Equivalent to sonar or radar, echolocation is the production of sound used for ...
The sound waves given are then reflected off the objects and received through
the ... Information; Diagram Information: Explanation of Echolocation In Mammals
What happens when a sound wave hits a concave shaped surface? Is the sound
... Echoes are the sound of your own voice reflecting back to your ears.