waves

• amplitude increases as energy increases, frequency decreases as energy increases, and wavelength decreases as energy increases
• waves transfer energy
• longitudinal- motion of particles is the same as waves motion
• transverse- particles motion is right angle to waves direction
• diffraction is the spreading of waves past a barrier
• greater wavelength means greater diffraction
• low energy and frequency long wavelength - radio, micro, infrared, visible, ultraviolet, x-ray, gamma - high energy and frequency short wavelength
• refraction is the movement of light from one medium to another as it changes direction
• less dense to more dense means it slows down moving towards the normal