Acoustics

__//**Speed:**//__ Distance travelled in unit time (m/s). __//**Frequency:**//__ Number of waves that pass a point per second (Hz). __//**Wavelength:**//__ Distance between matching points on the wave (m). __//**Longitudinal:**//__ Vibration parallel to direction of travel. __//**Transverse:**//__ Vibration at right angle to direction of travel.  **Video ** The sound is created by the vibration on the surface of an object, in this case drums, strings and wind instruments. <span style="background-color: #ffffff; color: #000080; font-family: 'Trebuchet MS',Helvetica,sans-serif;"> <span style="background-color: #ffffff; color: #000080; font-family: 'Trebuchet MS',Helvetica,sans-serif;"> <span style="background-color: #ffffff; display: block; font-family: Tahoma,Geneva,sans-serif; text-align: justify;"><span style="background-color: #ffffff; color: #000080; font-family: 'Trebuchet MS',Helvetica,sans-serif;">The vibration releases invisible waves that go back and foward producing new waves when the air particles collide with each other, this way transmiting the sound. <span style="background-color: #ffffff; color: #000080; font-family: 'Trebuchet MS',Helvetica,sans-serif;"> <span style="background-color: #ffffff; color: #000080; font-family: 'Trebuchet MS',Helvetica,sans-serif;"> <span style="background-color: #ffffff; display: block; font-family: Tahoma,Geneva,sans-serif; text-align: justify;"><span style="background-color: #ffffff; color: #000080; font-family: 'Trebuchet MS',Helvetica,sans-serif;">Frequency: is the total number of times per second that an air molecule moves back and foward. <span style="background-color: #ffffff; color: #000080; font-family: 'Trebuchet MS',Helvetica,sans-serif;"> <span style="background-color: #ffffff; color: #000080; font-family: 'Trebuchet MS',Helvetica,sans-serif;"> <span style="background-color: #ffffff; display: block; font-family: Tahoma,Geneva,sans-serif; text-align: justify;"><span style="background-color: #ffffff; color: #000080; font-family: 'Trebuchet MS',Helvetica,sans-serif;">The oscilloscope is an instrument used to messure the sound waves. They are reflected on a oscillogram so you can observe the amplitud and frequency of the waves. The condensation of the air molecules move the line up in the oscillogram.