Chapter 21: Sound. Pages 532 - 557. Sound is a form of energy produced by the vibration of matter. Sound is a compressional or longitudinal wave Ex. Spring Sound is transmitted through solids, liquids, and gases. Sound is transmitted better through solids and liquids. Why? More dense
Pages 532 - 557
vibrates ear drum
amplified by bones
converted to nerve impulses in cochlea
Uses: clean jewelry, medical applications
Infrasonic: lower than 20 Hz
Found: in the atmosphere and in the crust when plates move; also an indication motion sicknessFrequencies you cannot hear
Medical Imaging matter.
“Sound Navigation and Ranging”Seeing with Sound
can hear them.
Constructive matter. - louder
Destructive - softerD. Interference