1. When the movement of a vibrating particle is perpendicular to the direction of the wave, it is termed _______ wave motion.   longitudinal   transverse   2. The loudness of sound depends on the _______.   frequency   amplitude   3. The time in which a vibrating body completes one vibration is called _______.   frequency   time period   amplitude   Hint Half-n-half Clue   4. The Greek letter _______ is usually used as a symbol to denote the wavelength.   κ (kappa)   δ (delta)   λ (lambda)   Half-n-half Clue   5. The maximum displacement of a vibrating body from its mean position is called _______.   amplitude   frequency   time period   Half-n-half Clue   6. The SI unit of frequency is _______.   Hertz   Joule   Coulomb   Half-n-half Clue   7. The distance between two consecutive crests of a wave is called _______.   amplitude   period   wavelength   Half-n-half Clue