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Grade 4 E-3 Sci. Def
Chapter 3 Sound
Term | Definition |
---|---|
sound | A series of vibrations that you can hear |
compression | The part of a sound wave in which air is pushed together |
sound wave | A moving pattern of high and low pressure that you can hear |
amplitude | A measure of the strength of a sound wave; shown by height on a wave diagram |
wavelength | The distance from one compression to the next in a sound wave |
loudness | A measure of the amount of sound energy reaching your ear |
pitch | A measure of how high or low a sound is |
speed of sound | The speed at which a sound wave travels through a given material |
echo | A sound reflection |
sonic boom | A shock wave of compressed sound waves produced by an object moving faster than sound |