1. To what is amplitude related?
B. the maximum displacement from the rest position
C. neither A nor B
D. both A and B
2. Suppose two waves collide and the temporary combined wave that results is smaller than the original waves. What term best describes this interaction?
A. diffraction
B. destructive interference
C. standing wave formation
3. Transverse and longitudinal waves both
B. transfer energy through a medium.
C. move at right angles to the vibration of the medium.
D. are capable of moving the medium a long distance.
4. In refraction, when a wave travels from one medium to another, it
A. changes speeds.
B. stays in step.
C. always moves in the same direction.
5. When a wave strikes a solid barrier, it behaves like a basketball hitting a backboard. This wave behavior is called
B. diffraction.
C. refraction.
D. reflection.
6. Which type of mechanical wave needs a source of energy to produce it?
B. a longitudinal wave
C. a surface wave
D. all of the above
7. A wave has a wavelength of 10 mm and a frequency of 5.0 hertz. What is its speed?
A. 50 mm/s
C. 2.0 mm/s
D. 0.50 mm/s
8. Figure 17-1 shows a wave movement during 1 second. What is the frequency of this wave?
A. 2 hertz
B. 2 meters/second
C. 0.5 second
the correct answers are
D
A
A
D
B
D
Julliet G.Alecer
1. To find the answer to this question, we need to understand what amplitude is. Amplitude is a measure of the maximum displacement of a wave from its rest position. So, when a wave is at its highest point or lowest point, the amplitude is the distance from the rest position to that point. Therefore, the correct answer is (B) the maximum displacement from the rest position.
2. In this question, we are asked to identify the term that best describes the interaction between two waves when the temporary combined wave that results is smaller than the original waves. This type of interaction is known as destructive interference. Destructive interference occurs when two waves with opposite amplitudes meet and cancel each other out, resulting in a smaller overall wave.
3. Transverse and longitudinal waves both have specific properties. They both transfer energy through a medium, so the correct answer is (B) transfer energy through a medium.
4. One of the properties of waves is refraction, which occurs when a wave travels from one medium to another. In this process, the wave can change speeds as it enters a different medium. Therefore, the correct answer is (A) changes speeds.
5. When a wave strikes a solid barrier, it undergoes a specific behavior known as reflection. This behavior is similar to how a basketball behaves when it hits a backboard. The wave bounces back off the barrier and changes direction, just like how the basketball rebounds off the backboard. Therefore, the correct answer is (D) reflection.
6. Among the given options, the type of mechanical wave that requires a source of energy to produce it is all of the above. Both longitudinal waves and surface waves require a source of energy to create them.
7. To find the speed of a wave, we can use the formula speed = frequency x wavelength. The given question provides the wavelength as 10 mm and the frequency as 5.0 hertz. Therefore, the speed would be 5.0 x 10 = 50 mm/s. The correct answer is (A) 50 mm/s.
8. The frequency of a wave is the number of complete cycles it completes in a given time. In the given figure, it shows the wave completing 2 cycles during 1 second. Therefore, the frequency of this wave would be 2 hertz since it completes 2 cycles per second. The correct answer is (A) 2 hertz.
The first one is actually D, both the first and second choices
1A,
2B,
3B,D
4A,
5D,
6D,
7A,
8 ??? λ=v/f
1.A
2.A
3.A
4.D
5.B
6.D
You know there is a website with every correct answer right?