123 School Work

Observe and Descriptions

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       Sound is vibrations transmitted through an elastic solid or a liquid or gas, with different frequencies. All kinds of different things produce sound. Some sound is in frequencies so high or low we can not even hear it. Although we may not be able to hear it sound is used for many different things.
  
  1.     Sonogram
       a.     Observations
  
            i.     You have to wait for some time to receive a sonogram because the bones in the baby need to be dense enough for the sound to make a reading.
            ii.     The picture of the sonogram is in the shape of a rectangle...