science 4

• sound is a wave or vibratioin travels on 3 states of matter solid liquid gas
• vaccum this means if you shout and talk no one can hear you
• frequency important measure of sound
• higher frequency will gave us high pitch
• Sound is defined as the range of compression
• The whole range of compression wave is called sonic spectrum
• Your throat has a pair of sheets of membrane called the vocal cords
• intesity refers to a measurable physical altibute of sound wave
• loundness concerns a physicological sensation cause by sound wave
• a lound sound is produced when there is an increase in the amplitude of the sound wave
• the most common unit used express loudness in the decibel (dB)
• the level of 120 decibel is sometimes call threshold of pain
• 20k is called ultrasonic sound
• the unit of frequency is cycle per second or hertz or hz
• frequency how long to hold your sound
• pitch highness or lowness of sound
• pitch of the sound a high pitched sound correspond to a high frequency
• resonance is a condition that exists when the frequency of sound source matches
• timbre tone of the color depends on the relative intesties
• bamboo is used as an indigedeous material for musical instrument
• balingbing bamboo buzzer of the kalinga
• kubing jaw harp of alta
• gabbang xylophone of the tasug
• tagutok bamboo idiophone\
• the ear drum is set into vibration
• inner ear has alor of liquid filling