Energy, This is what waves transfer from one place to another, Wavelength, This is how long a wave is and it is measured in metres, Frequency, This is how many waves pass in one second. It is measured in Hertz., Crest, The top of a wave sometimes called the peak., Ultrasound, Sounds above the normal hearing range of a human., Amplitude, The height of a wave

аутор

Табела

Визуелни стил

Поставке

Промени шаблон

Врати аутоматски сачувано: ?