How can I describe a time when I have observed the transmission, reflection, or absorption of a sound?


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I will go into all three interactions with a single example because all three interactions can occur one right after another.  Suppose that your brother locks himself in his bedroom, and you have to convince him to open the door.  When you begin talking, your voice sends sound wave energy at the closed door.  When that sound energy hits the hard, flat surface of the door, some of that sound energy is reflected back to you.  Some of the original sound energy from your voice will also attempt to pass through the door into your brother's room, but not all of it will make it through.  The sound energy that doesn't get reflected or make it through the door is absorbed sound energy.  What does make it through the door and into your brother's room is the transmitted sound energy.  I've attached an image to help explain. 

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