Answer:
Step-by-step explanation:
1. Two people, A and B, are on each end of a 50 foot rope and wish to communicate only with the rope. They may do so by moving the rope up and down, using the height of the movement to transmit in Morse code. For A to move B's side of the rope, A must add energy to the rope by moving it up and down on their end. That energy is transmitted by virtue of the rope movement (up and down) as it moves from A to B. When that energy reaches B's end of the rope, B can sense the energy by the rope's movement. But the rope has not changed - it is still the same rope. The molecules in the rope simply carried the energy in the form of waves along the rope.
2. Wavelength: Listening to music illustrates how the wavelength of a sound wave is used to convey meaning in what we call a melody.
Velocity: Light travels faster than sound. Watching a fireworks display, one can easily predict when to cover their ears if a particularly loud firework explodes in the sky. One can see the explosion well before the sound arrives.
3. Amplitude: Amplitude, or the intensity of sound, is evidence by how loud something is. Hearing a person speak from across the gym is difficult if that person is far away. But the same voice is easily heard as one approaches, even though it is the same voice. The amplitude is the height of the sound wave - it carries more energy than a sound wave of the same frequency with a lower amplitude. Sound energy dissipates the further it travels.
