Name one property of waves that do not change when the wave passes from one medium to another.

Explanation

**Step-by-Step Text Solution:**

1. **Understanding Waves**: Waves are disturbances that transfer energy from one place to another. They have several properties, including wavelength, frequency, amplitude, and speed.

2. **Identifying Properties of Waves**: When a wave travels from one medium to another (for example, from air to water), some of its properties can change. These properties include speed, wavelength, and amplitude.

3. **Frequency of Waves**: Frequency is defined as the number of waves that pass a given point in one second. It is measured in Hertz (Hz).

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