Question

how could he use these materials to measure the wavelength of the waves? choose 1 answer: a capture video of the waves from above while holding the camera still. play the video and count how many wave crests enter one side of the screen during the video. divide this number by the total time of the video. b hold the meterstick vertically in the water. capture video of the waves from the side. scroll through the video to find the highest and lowest levels reached by water on the meterstick as waves pass. find the difference of these values and divide it by two. c hold the meterstick horizontally near the waters surface, pointing in the direction the waves are moving. capture video of the waves from above. pause the video to find the distance between one crest and the next crest on the meterstick.

Explanation:

The wavelength of a wave is the distance between two consecutive crests (or troughs). Option C describes a method to directly measure this distance by holding a meter - stick horizontally near the water's surface and finding the distance between one crest and the next crest on the meter - stick. Option A measures the frequency (number of waves passing a point per unit time) rather than wavelength. Option B measures the amplitude (half of the vertical distance between the highest and lowest points of the wave) not the wavelength.

Answer:

C. Hold the meterstick horizontally near the water's surface, pointing in the direction the waves are moving. Capture video of the waves from above. Pause the video to find the distance between one crest and the next crest on the meterstick.