Ppt Waves
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Waves transfer energy and are made up of pulses. There are two main types of waves: transverse waves, where particle movement is perpendicular to velocity, and longitudinal waves, where particle movement is parallel to velocity. Longitudinal waves have two parts - compressions where particles are closer together, and rarefactions where they are farther apart. When two waves meet, their amplitudes add through interference and superposition, which can make the combined wave bigger or smaller.
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Ppt Waves
- 1. Introduction to Waves Part of a wave is called a pulse Waves Transfer energy The height of a wave is called the amplitude It can be positive or negative Zero amplitude is on the equilibrium line
- 2. 2 Types of Waves Transverse- The movement of the individual particles is perpendicular to the velocity of the wave Longitudinal- The movement of the individual particles is parallel to the velocity of the wave 2 parts of a Longitudinal wave Compression- The high pressure part where the particles are closer together (also called condensation) Rarefaction- The low pressure part where the particles are farther apart
- 3. Interference Interference happens when to waves come together. At the moment the waves come together their amplitudes (heights) add, but after they pass through each other unchanged, like the other wave was never there. When the amplitudes add they can become bigger or smaller…this is called Superposition.