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# Wave Properties and Behavior (Grade 8)

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## Wave Properties and Behavior

1.
Point J is a wave crest.
1. True
2. False
2.
Sound moves slower in water compared to air.
1. True
2. False
3.
The diagram shows a transverse wave.
1. True
2. False
4.
Which of the following determines the intensity of sound?
1. wavelength and frequency
2. amplitude and frequency
3. amplitude and distance
4. wavelength and distance
5.
If Kaylee wanted to increase the speed of a sound wave traveling through a certain medium, which of the following would most likely help?
1. Increase the temperature of the medium
2. Decrease the temperature of the medium
3. Increase the frequency of the sound wave
4. Decrease the amplitude of the sound wave
6.
The diagram represents
1. the actual shift in frequency of sounds waves by a moving object
2. the apparent shift in frequency of sounds waves by a moving object
3. the actual shift in frequency of sounds waves by a stationary object
4. the apparent shift in frequency of sounds waves by a stationary object
7.
If Jeremy stands at a certain position and counts the number of crests that pass by him over a certain period of time, what is he most likely measuring?
1. amplitude
2. wavelength
3. speed
4. frequency
8.
When a wave enters a new medium at an angle, what type of interaction occurs?
1. reflection
2. refraction
3. diffraction
4. infraction
9.
Which diagram depicts the waves interacting destructively?
10.
What is an example of reflection?
1. A sound wave spreads out to travel around a corner
2. An echo
3. A straw appears bent in water
4. None of the above
11.
In which of the following mediums would waves be most likely to travel fastest?
1. a block of wood
2. liquid alcohol
3. helium gas
4. they would travel the same speed in all these
12.
Wave B will create a                 sound than wave A.
1. louder
2. quieter
3. lower pitch
4. higher pitch
13.
If you measure the distance between the resting position and the crest of a wave, you are measuring:
1. wavelength
2. amplitude
3. frequency
4. wave speed
14.
The wavelength shown in the diagram is                .
1. 2 meters
2. 4 meters
3. 8 meters
4. 12 meters
15.
Mechanical waves that are created through areas of compression and rarefication are called:
1. transverse waves
2. longitudinal waves
3. electrical waves
4. diffracted waves
16.
In a given medium, if the frequency of a wave decreases, its
1. wavelength increases
2. speed increases
3. amplitude decreases
4. wavelength decreases
17.
The distance between E and H is called                .
1. a crest
2. a wavelength
3. the amplitude
4. the frequency
18.
When a teacher's voice carries out of the classroom through an open door and is heard down the hall, what type of interaction is most likely the cause?
1. reflection
2. refraction
3. diffraction
4. infraction
19.
If a 100 kg student jumped in a pool from the same height as a 50 kg student, what would likely be true of their resulting waves?
1. The larger student would create a wave with larger amplitude.
2. The smaller student would create a wave with larger amplitude.
3. The larger student would create a wave with larger wavelength.
4. The smaller student would create a wave with larger wavelength.
20.
If you measure the distance between two compression zones in a longitudinal wave, what quantity are you measuring?
1. frequency
2. wavelength
3. speed
4. amplitude
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