Two students hold the ends of a jump rope. One student moves the jump rope up and down, making a wave. Then, the student moves closer. Which quantity of the wave will decrease?

Question

(1 point)
• speed
O amplitude
• wavelength
O frequency

Answer 1

When one student moves closer to the other while generating a wave on the jump rope, the wavelength of the wave will decrease. This is because as the two ends of the rope come closer together, the distance between successive wave crests (or troughs) diminishes, resulting in shorter wavelengths.

The other quantities, speed, amplitude, and frequency, are not necessarily affected by the change in distance between the students in the context provided.

So, the correct answer is: • wavelength