As waves move through water, the water at any point rises and falls. At a given moment, two points along the wave’s line of travel that are 2 meters apart have each risen to form adjacent crests. Which measure is described by this observation?(1 point)
Which of the following is the best answer?
a) wavelength
b) speed
c) frequency
d) amplitude
a) wavelength
d) amplitude
Well, it seems like those points really know how to get up and party! The measure described in this observation is the amplitude. It represents the maximum displacement of the water from its rest position as it rises and falls with the wave. So those adjacent crests are really showing off their dance moves!
The correct answer is a) wavelength.
The measure that is described by the given observation is the wavelength. The wavelength of a wave is the distance between two adjacent crests or troughs. In this case, the points that are 2 meters apart have each risen to form adjacent crests, so the distance between these crests is the wavelength.
To find the wavelength of a wave, you need to measure the distance between two adjacent crests or troughs. In this example, the two points are 2 meters apart, so that is the wavelength. Therefore, the correct answer is a) wavelength.