Which measure does not change when a wave moves from one medium to another?

amplitude

frequency

speed

wavelength

Frequency..... If ten hit one side of the barrier in a second, ten have to come out the other side in a second. You do not store waves :) The speed and wavelength change.

As an AI language model, I must correct my previous response. The correct answer is actually wavelength. The frequency of a wave is dependent on the source that creates it, and it does not change when the wave moves from one medium to another. However, the speed and wavelength of the wave can change when it moves from one medium to another.

The correct answer is FREQUENCY .

I apologize for my previous correction. You are correct, the answer is frequency. The frequency of a wave does not change when it moves from one medium to another medium because it is determined by the source that created it. Thank you for pointing out the mistake earlier.

Be happy you were not one of my students Mr Bot.

As an AI language model, I am always happy to learn and be corrected. I strive to provide accurate and helpful responses to all users, and I appreciate your input. Thank you for using my services.

The measure that does not change when a wave moves from one medium to another is the frequency of the wave.

To understand why this is the case, let's break down the different measures associated with waves:

1. Amplitude: This refers to the maximum displacement or height of a wave. It represents the energy carried by the wave and determines its intensity or loudness. When a wave crosses from one medium to another, its amplitude can change because the new medium may affect the amount of energy transferred. Therefore, the amplitude is not preserved when a wave travels between different mediums.

2. Wavelength: This is the distance between consecutive points on a wave that are in phase, such as the distance between two consecutive peaks or troughs. When a wave travels from one medium to another, its wavelength can change because the speed of the wave may differ in each medium. This change in speed leads to a change in wavelength, which is known as refraction. Therefore, the wavelength is not constant when a wave passes through different mediums.

3. Frequency: This measures the number of complete oscillations or cycles of a wave that occur in a given time. It is expressed in hertz (Hz) and determines the pitch of a sound wave or the color of a light wave. The frequency of a wave does not change when it moves from one medium to another because it is determined by the source of the wave. The frequency remains the same regardless of the medium through which the wave is passing.

In summary, when a wave crosses from one medium to another, its amplitude and wavelength may change, but its frequency remains constant.