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 it faster. Which quantity of the wave will increase?
A.)frequency
B.)wavelength
C.)amplitude
D.)speed
A.)frequency
To determine which quantity of the wave will increase when the student moves the jump rope faster, let's break down the options given - frequency, wavelength, amplitude, and speed.
A) Frequency: Frequency refers to the number of complete waves passing a given point in a given unit of time. It is usually measured in hertz (Hz). When the student moves the jump rope faster, the number of waves passing a point in a given unit of time will increase. Therefore, the frequency of the wave will increase.
B) Wavelength: Wavelength refers to the distance between two corresponding points on consecutive waves (such as the distance between two wave peaks or troughs). It is usually measured in meters (m) or any other unit of length. The speed at which the jump rope is moved does not directly impact the wavelength of the wave. Therefore, the wavelength will remain the same.
C) Amplitude: Amplitude refers to the maximum displacement or distance from the equilibrium position of a particle on the wave. In simple terms, it determines the height or intensity of the wave. When the student moves the jump rope faster, the height or intensity of the wave may increase. Therefore, the amplitude of the wave may increase.
D) Speed: Speed refers to how quickly the wave propagates through a medium. It is the product of the frequency and wavelength of the wave. Increasing the speed of the movement of the jump rope does not directly impact the speed of the wave. Therefore, the speed of the wave will remain the same.
Based on the explanations above, the correct answer is:
A) Frequency