Physical Science Activities Manual ________________________________________________________________________________________________________________ ________________________________________________________________________________________________________________ Center of Excellence for Science and Mathematics Education at The University of Martin coils of the medium move. Is this a transverse wave. [No] 5. In this case the spring did not move at right angles to the direction of the disturbance. It bunches up in some areas and spreads out in others. The spring moves back and forth rather than up and down. When the disturbance moves the medium back and forth parallel to the direction in which the wave travels we have a Longitudinal Wave . Sometimes these are called compressional waves. . 6. By which type of waves does sound travel? [Longitudinal] 7. Sound is produced by the vibration (rapid back-and-fort motion) of an object which then pushes again and again on the surrounding medium. An example
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