1. The distance between two consecutive crests of a wave is called _______.   amplitude   period   wavelength   Hint Half-n-half Clue   2. The SI unit of frequency is _______.   Joule   Hertz   Coulomb   Half-n-half Clue   3. A low-pitched sound is very shrill in nature.   True   False   4. When the movement of a vibrating particle is perpendicular to the direction of the wave, it is termed _______ wave motion.   longitudinal   transverse   5. A note of 500 Hz travels through a solid. If the velocity of sound in the solid is 4000 m/s, the wavelength is _______.   2 m   4.0 m   8 m   24 m   Half-n-half Clue   6. The pitch of a note depends on the _______ of the vibrations.   frequency   amplitude   7. The frequency of a note that is one octave higher than a note of 768 Hz is _______.   776 Hz   800 Hz   1024 Hz   6144 Hz   Half-n-half Clue