Here's why:

* The Relationship: The energy of a wave is directly proportional to its frequency. This means that higher frequency waves have more energy, and lower frequency waves have less energy.

* Wavelength and Frequency: Wavelength and frequency are inversely proportional. This means that longer wavelengths correspond to lower frequencies, and shorter wavelengths correspond to higher frequencies.

Putting it together:

* Longer wavelengths = Lower frequencies = Less energy

* Shorter wavelengths = Higher frequencies = More energy

Examples:

* Radio waves: Have very long wavelengths and low frequencies, carrying relatively low energy.

* Gamma rays: Have very short wavelengths and high frequencies, carrying extremely high energy.

Let me know if you'd like more examples or want to delve into the equations that describe this relationship!