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.
Transverse Waves
and
Longitudinal Waves
A high amplitude sound wave will be loud.
A low amplitude sound wave will be quiet.
A high amplitude light will be bright.
A low amplitude light will be dim.
Absorption
Refraction
Reflection