Term
| What types of waves require a medium? |
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Definition
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Term
| Define transverse wave & give a real world example. |
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Definition
a wave that vibrates perpendicular to the wave's motion
ex: seismic waves |
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Term
| Define longitudinal wave & give a real world example. |
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Definition
a wave that has a disturbance that is parallel to the wave's motion
ex: sound |
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Term
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Definition
| how many wave cycles pass a given point in a certain amount of time (usually one second) |
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Term
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Definition
| distance between 2 consecutive points on a wave |
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Term
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Definition
| distance from equilibrium |
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Term
| How are frequency and wavelength related? |
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Definition
| as wavelength increases, frequency decreases |
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Term
| How are frequency and period related? |
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Definition
| as frequency increases, period decreases |
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Term
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Definition
| the time it takes for one wave cycle to occur |
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Term
| How are period and wavelength related? |
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Definition
| as period increases, wavelength increases |
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Term
| What factors affect the speed of a wave. |
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Definition
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Term
| What factors affect the period of a pendulum? |
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Definition
| acceleration due to gravity and length of the string |
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Term
| Describe (and draw) what happens when 2 waves meet with constructive interference. |
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Definition
| the amplitude of the resultant wave is greater |
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Term
| Describe (and draw) what happens when 2 waves meet with destructive interference. |
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Definition
| the amplitude of the resultant wave is smaller |
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Term
| Which harmonics are possible when a string vibrates? |
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Definition
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Term
| Which harmonics are possible when air vibrates in an open column? |
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Definition
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Term
| Which harmonics are possible when air vibrates in a closed column? |
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Definition
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Term
| A clock pendulum with a mass of 0.52 kg and a length of 62 cm, has a period of 0.95 s. How much longer would it have to be to have a period of 1 s? |
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Definition
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Term
| When an orchestra is tuning up, the first violinist plays a note at 256 Hz. What is the wavelength of that sound wave if the speed of sound in the hall is 340 m/s? What is the period? |
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Definition
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Term
| Geo is standing on a breakwater and he notices that one wave goes by every 4.2 s. The distance between crests is 12.3 m. What is the frequency and speed? |
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Definition
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Term
| A sub is traveling toward a stationary detector. If the sub emits a 260 Hz sound that is received by the detector as a 262 Hz sound, how fast is the sub traveling. Use 1533 m/s for the speed of sound in water. |
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Definition
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Term
| A 350 Hz tuning fork is held over the end of a pipe that is inserted into water. What is the spacing between the resonance lengths of the pipe if the speed of sound is 348 m/s? |
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Definition
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Term
| The lowest note on an organ is 16.4 Hz. What is the shortest open organ pipe that will resonate at this frequency? What is the pitch if the same organ pipe is closed? |
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Definition
10.5 m
8.2 Hz
(answers may be rounded) |
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Term
| A fire truck is moving at 35 m/s, and a car in front of the truck is moving in the same direction at 15 m/s. If a 327 Hz siren blares from the truck, what frequency is heard by the driver of the car? |
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Definition
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Term
| Water waves in a lake travel 3.4 m in 1.8 s. The period of oscillation is 1.1 s. What is the speed of the water waves? What is their wavelength? |
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Definition
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Term
| How long must a pendulum be to have a period of 2.3 s on the Moon, where acceleration due to gravity is 1.6 m/s/s? |
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Definition
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Term
| A sound wave of wavelength 0.6 m and a velocity of 330 m/s is produced for 0.5 s. What is the frequency? |
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Definition
| 550 Hz (answer may be rounded) |
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Term
| The speed of sound in water is 1498 m/s. A sonar signal is sent straight down from a ship at a point just below the water surface, and 1.8 s later the reflected signal is detected. How deep is the water? |
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Definition
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Term
| How are pitch and frequency related? |
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Definition
| as frequency goes up, pitch goes up |
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Term
| How are amplitude and loudness related? |
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Definition
| as amplitude increases, loudness increases |
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Term
| What is the Doppler Effect? |
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Definition
| the change in frequency of a sound caused by a moving source, a moving detector or both |
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Term
| As a moving sound is coming toward you, how does the detected pitch differ? |
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Definition
| the detected pitch is higher than the actual pitch because the wavelengths are shorter (bunched together) & frequency is higher |
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Term
| As moving sound moves away from you, how does the detected pitch differ? |
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Definition
| the detected pitch is lower than the actual pitch because the wavelengths are longer(spread out) & frequency is lower |
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Term
| Does light require a medium? |
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Definition
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Term
| What are the 3 primary colors of light? |
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Definition
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Term
| What are the 3 secondary colors of light? How are secondary colors created? |
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Definition
yellow, magenta, cyan
created by mixing 2 primary colors |
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Term
| What 2 colors of light combine to form yellow? |
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Definition
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Term
| What 2 colors of light combine to form magenta? |
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Definition
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Term
| What 2 colors of light combine to form cyan? |
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Definition
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Term
| Define complimentary colors? What are the complimentary colors of light? |
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Definition
2 colors that combine to make white light
yellow & blue, cyan & red, magenta & green |
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Term
| What are the primary pigment colors? |
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Definition
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Term
| How do polarization lenses work? |
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Definition
| they only allow a single plane of light through |
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Term
| How can the Doppler Effect be related to light? |
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Definition
red shift: wavelengths are spread out, frequency is lower, red light is detected
blue shift: wavelengths are bunched together and shorter, frequency is higher, blue color is detected |
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Term
| How can the Doppler Effect be used as proof of the big bang theory? |
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Definition
| star that emit light are giving off red light, means they are moving away from us, frequency is lower because wavelengths are longer |
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