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Vocabulary for light and sound unit

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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The term describing sounds with frequencies higher than 20,000 Hz   Ultrasonic  
A disturbance that transmits energy through matter or space   Wave  
A mirror that curves out toward you, like the back of a spoon   Convex mirror  
The transfer of energy carried by light waves to particles of matter   Absorption  
The entire range of electromagnetic waves   Electromagnetic spectrum  
A substance through which a wave can travel   Medium  
A wave that can travel through space or matter and consists of changing electric and magnetic fields   Electromagnetic wave  
A wave in which the particles of the medium vibrate back and forth along the path that the wave travels   Longitudinal wave  
Matter that can transmit light, but also scatters the light as it passes through the matter   Translucent  
The process of using reflected sound waves to find objects   Echolocation  
A curved, transparent object that forms an image by refracting light   Lens  
The number of waves produced in a given amount of time   Frequency  
Occurs when an object vibrating at or near a resonant frequency of a second object causes the second object to vibrate   Resonance  
The term describing sounds with frequencies lower than 20 Hz   Infrasonic  
A wave that forms a pattern in which potions of the wave do not move and other potions move with a large amplitude   Standing wave  
a wave interaction that occurs when two or more wave overlap and combine   Interference  
The law that states tat the angle of incidence is equal to the angle of reflection   Law of reflection  
A lens that is thinner in the middle than at the edges   Concave lens  
The speed at which a wave travels   Wave speed  
A wave in which the particles of the wave’s medium vibrate perpendicularly to the direction the wave is traveling   Transverse wave  
Matter that does not transmit any light   Opaque  
The emission of energy in the form of electromagnetic waves   Radiation  
The distance between one point on a wave and the corresponding point on an adjacent wave in a series of waves; for e3xample, the distance between two adjacent crests or compressions   Wavelength  
Matter that light can be easily transmitted   Transparent  
The maximum distance a wave vibrates from its rest potion   Amplitude  
A reflected sound wave   Echo  
The most common unit used to express loudness   Decibel  
A material that gives a substance its color by absorbing some colors of light and reflecting others   Pigment  
The release of light energy by particles of matter that have absorbed energy   Scattering  
The bending of waves around barriers or through openings   Diffraction  
How high or low a sound is perceived to be   Pitch  
The passing of light through matter   Transmission  
A mirror with a flat surface   Plane mirror  
A mirror that is curved inward like the inside of a spoon   Concave mirror  
The bending of a wave as it passes at an angle from one medium to another   Refraction  
The bouncing back of a wave after it strikes a barrier or an object   Reflection  
A lens that is thicker in the middle than at the edges   Convex lens  
The apparent change in the frequency of a sound caused by the motion of either the listener or the source of the sound   Doppler effect  
How loud or soft a sound is perceived to be   Loudness  


   


 
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