ch 18 physics
Terms
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- waves
- rhythmic disturbances that carry energy through matter or space.
- medium
- a material through which a wave transfers energy.
- transverse wave
- the medium moves at right angles to the direction the wave travels.
- crests
- the highest point of a wave.
- troughs
- the lowest points of a wave.
- wavelength
- the distance between a point on one wave and the identical point on the next wave, such as from crest to crest or trough to trough.
- amplitude
- the distance from crest(or trough) of a wave to the rest position of the medium.
- frequency
- the number of wave crests that pass one place each second.
- compressional wave
- matter that vibrates in the same direction as the wave travels.
- pitch
- the highness or lowness of a sound.
- intensity
- depends on the amount of energy in each wave.
- loudness
- the human perception of sound intensity.
- ultrasonic technologyt
- technologytechnology using high frequency waves for many different purposes.
- music
- created using specific pitches and sound quality.
- resonance
- if the sound that reaches an object is at the same frequency as the natural frequency of the object, the object will begin to vibrate.
- quality
- describes the differences among sounds of the same pitch and loudness.
- interference
- the ability of two or more waves to combine and form a new wave.
- reverberation
- the effect produced by many reflections of sound.
- noise
- sound that has no set pattern or definite pitch.
- acoustics
- the study of sound