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Chapter 1; Waves
Question | Answer |
---|---|
What occurs when vibrations traveling through an object match the object’s natural frequency? | Resonant Frequency |
A disturbance that transfers energy from place to place is called a | Wave |
Mechanical waves are created when | a source of energy causes a medium to move |
The bending of waves due to a change in speed is called | refraction |
The bending of waves around the edge of a barrier is known as | diffraction |
The interaction between two waves that meet is called | interference |
Waves combine to make a wave with larger amplitude in a process called | constructive interference |
When an incoming wave combines with a reflected wave in such a way that the combined wave appears to be standing still, the result is a | standing wave |
A wave travels through a medium because | The wave travels particle to particle |
Mechanical waves are classified according to | How they move |
Frequency is measured in units called | hertz |
When a wave hits a surface through which it CANNOT pass and bounces back, it undergoes | reflection |
Waves combine to produce a smaller or zero-amplitude wave in a process called | destructive interference |
Why do you see lightning from a distant storm before you hear thunder? | Light travels faster than sound |
Compressions and rarefactions are characteristic of what type of wave? | longitudinal |
The distance between two consecutive crests of a wave is called the | wavelength |
A wave with a frequency of 15 Hz has a wavelength of 4 meters. At what speed will this wave travel? | 60 m/s |
The speed of a wave is 35 m/s. If the wavelength of the wave is 5 meters, what is the frequency of the wave? | 7 Hz |
A wave has a frequency of 15 Hz and speed of 30 m/s. What is the wavelength of the wave? | 0.5 m |
Frequency = | Speed/ Wavelength |
Speed = | Wavelength x Frequency |
Wavelength = | Speed/ Frequency |