Waves!

Today we learned about waves and of course the obvious example is the beach! We live in Hawaii and we're surrounded by waves which are transfers of energy but not material. Waves are also wiggles or vibrations in time ans space. Waves can be broken down into parts, the high point of a wave is known as the crest, the low point of a wave is known as the trough, and the distance from equilibrium to the crest of trough of the wave is known as amplitude. We also learned about wavelength (λ) or the length of a wave. So for example, the distance between two crests or two troughs would be the wavelength of a wave. I also learned how to find the velocity of a wave (velocity = frequency x λ). Frequency is how frequently a wave will come by (cycle/second or Hertz (Hz)). So if you're at the beach you find the frequency of the waves by counting how many waves go by in one second. Then multiply that by the wavelength of the waves and you'll be able to find the velocity of the waves.

This is a picture of Trek and I at da beach check out the waves! I never thought about it but we learned that two waves can be at the same place at the same time. When waves interfere with each other it's either with constructive interference, where the waves add together or destructive interference where they subtract from each other or cancel out.