1) A traveling disturbance that carries energy from one place to another. a) medium b) wave c) vaccum 2) The "height" of a wave from resting point- determines how loud a sound is a) trough b) crest c) amplitude 3) The distance between 2 consecutive (one after another) crests or troughs on a wave a) wavelength b) amplitude c) frequency 4) The number of waves passing a point per second. Measured in a unit called hertz Hz a) volume b) frequency c) electromagnetic 5) The particles in this type of wave move back and forth in same direction as the wave  a) compression (longitudinal) b) transverse c) magnetic 6) The particles in this type of wave move up and down in opposite directions the wave is travelling a) frequency b) transverse c) longitudinal 7) light is this type of wave and it can travel through space a) surface wave b) p wave c) electromagnetic wave 8) The substance (solid, liquid or gas) through which a wave travels through. a) medium b) vaccum c) spectrum 9) Empty Space or the absence of matter a) medium b) spectrum c) vacuum 10) All the radiation from the sun is organized from the smallest wavelength to the largest wavelength a) electromagnetic spectrum b) gamma rays c) UV rays 11) when a wave strikes a barrier and bounces back a) refraction b) reflection c) absorption 12) the bending of waves due to a change in speed a) refraction b) reflection c) absorption 13) waves get "captured" or soaked into the material a) reflection b) absorption c) refraction 14) materials that reflect or absorb all light * Light cannot be seen through this. a) opaque b) translucent c) transparent 15) materials that transmit all the light allowing you to see clearly what is on the other side. a) opaque b) translucent c) transparent 16) materials that scatter the light that passes through them, thus only allowing you to see blurry images. a) opaque b) translucent c) transparent 17) how high or low the sound is - it depends on the frequency of the sound wave. a) amplitude b) pitch c) wavelength 18) sound waves with frequencies below the human range of hearing. a) infrasound b) echo c) ultrasound 19) Sound waves with frequencies above the human range of hearing. a) echo b) ultrasound c) infrasound 20) A reflected sound wave a) echo b) ultrasound c) infrasound 21) A person's perception of a sound and depends on the amount of energy and the distance from the source a) pitch b) volume (loudness) c) frequency 22) stands for sound navigaion and ranging- helps see underwater and inside the body a) SONAR b) echo c) absorption 23) the apparent change in frequency of a wave due to the motion of the source- causes high pitches and low pitches as an object moves a) SONAR b) echo c) Doppler effect 24) the colored part of the eye that surrounds the pupil. It regulates the amount of light that enters the eye a) lens b) pupil c) iris 25) a clear part of the eye behind the iris that helps to focus light and images on the retina. a) lens b) pupil c) iris 26) round opening in the center of the iris it changes size to let light into the eye a) lens b) pupil c) iris 27) the light-sensitive layer of tissue at the back of the eyeball it converts these images to electric signals and sends them along the optic nerve to the brain. a) retina b) pupil c) lens 28) a fluid-filled, spiral-shaped cavity that helps of hearing and processing of sound to the brain a) ear drum b) cochlea c) auditory nerve 29) the largest of three small bones in the middle ear - it passes along vibrations from the eardrum to the inner ear a) hammer b) ear drum c) cochlea 30) a thin membrane in the ear that vibrates when sound waves hit it a) eardrum b) choclea c) hammer

Sound and Light Vocab

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