T2 - Waves and Information

PS4. Waves and Their Applications in Technologies for Information Transfer

4-4PS4-1. Develop a model of a simple mechanical wave (including sound) to communicate that waves (a) are regular patterns of motion along which energy travels and (b) can cause objects to move. 

4-4PS4-2. Develop a model to describe that light must reflect off an object and enter the eye for the object to be seen.

4-PS4-3. Develop and compare multiple ways to transfer information through encoding, sending, receiving, and decoding a pattern. 

Properties of Waves

Amplitude - How much energy is in the wave.

A high amplitude wave is a high energy wave.

A low amplitude wave is a low energy wave.

Frequency - The number of waves that pass by each second; the number of cycles these waves complete in a second (known as a Hertz).

Frequency affects the energy of a wave.

Higher notes have higher frequencies.

Lower notes have lower frequencies.