1. The frequency of a note that is one octave higher than a note of 512 Hz is _______.   520 Hz   544 Hz   768 Hz   4096 Hz   Hint Half-n-half Clue   2. The velocity of a wave is equal to the product of the _______ and the wavelength.   amplitude   time period   frequency   Half-n-half Clue   3. A low-pitched sound is very shrill in nature.   True   False   4. The distance between two consecutive crests of a wave is called _______.   amplitude   period   wavelength   Half-n-half Clue   5. When the movement of a vibrating particle is perpendicular to the direction of the wave, it is termed _______ wave motion.   transverse   longitudinal   6. The number of vibrations produced by a vibrating body in one second is called _______.   amplitude   frequency   time period   Half-n-half Clue   7. The SI unit of frequency is _______.   Joule   Coulomb   Hertz   Half-n-half Clue