# Waves

• Created by: elenii
• Created on: 12-09-15 14:07
• Waves
• Transverse waves
• A transverse wave is one that vibrates, or oscillates.
• They vibrate at right angles to the direction in which the energy or wave is moving.
• Examples of transverse waves:
• Light waves
• Waves travelling on the surface of the water
• Waves on springs and strings
• Longitudinal waves
• A longitudinal wave is one which the vibrations, or oscillations, are along the direction in which the energy or wave is moving.
• Examples of longitudinal waves:
• Sound waves
• A slinky when you push and pull the end
• P-waves
• Diffracion
• If a barrier with a large gap is placed in the path of the waves, the majority of the waves passing through the gap continue through in a straight line.
• Speed = Frequency x Wavelength
• v = f x lambda
• Frequency = 1 ÷ Time
• f = 1 ÷ t
• Refraction
• If the boundary between shallow water and deep water is at an angle to the direction in which the waves are moving, the direction of the waves changes.
• We say that the waves have been refracted or have undergone refraction.
• Reflection
• When waves strike a straight or flat barrier, the angle at which they leave the barrier  surface is equal to the angle at which they meet the surface.
• The waves are reflected at the same angle at which they struck