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Science
Chapter 20,and 21 test
sentece | sentence |
---|---|
Waves only transfer ____ they don't transfer _____. | Energy, Matter |
In order for a sound wave to travel you have to have a ______. ______ _____ _____and ______ don't need a medium. | Medium, Light x-rays, microwaves |
As we saw with the running fork lab,________ occurs when two objects vibrate at the same ______. | Resonance, frequency |
When you cut the ______ of a wave in half, the ________ doubles. | Frequency, wavelength. |
As reflected sound wave creates an _______. | Echo |
On a _____ wave, compressions are the particles crowed together. | Longitudinal. |
When two _____ overlap, the amplitude increases and this is called ______ ______ | Crest, constructive interference. Jgkgjktffūu |
An example of q mechanical wave is an _____ wave. | Ocean. |
The amplitude of a wave shows the ________ of a wave. | Height. |
_______ is the equating for a wave. | v= t x f |
The frequency of a wave is described using _______. | Hertz |
When a wave is _____ it is ben and the image is distorted. | Refracted. |
A _______ is not a medium. | Vacuum |
__________ are sounds with frequencies higher than _______ hertz. | Ultrasonic sounds, 20,000 |
The _______ is when either the listener or the source moves. | Doppler effect. |
The frequency of a sound wave is determined by the ______ of the sound. | pitch |
The medium that the sound wave is traveling through affects the ______ sound. | Speed. |
A father pushing his laughing child on the swing is the _______ ______ because she is moving back and forth and the frequency and pitch are changing. | Doppler effect. |
Remember pitch deals with ______ not ______ so don't use decibels when dealing with pitch. Choses the Highest amount of hertz. | Hertz, decibels |
Constructive interference occur when _________ overlap and the sound _________ like in speakers. | Compression, increases |
A person hears ______ _____ when the shock waves reach them. | Sonic boom. |