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Waves, Electricity and Magnetism Unit Study Guide The test consists of multiple choice questions. This will be a test of how to apply the knowledge, not whether or not you can memorize it. Vocabulary you should know: diffraction Doppler Effect electromagnetic wave frequency interference mechanical wave reflection refraction wavelength amplitude pitch medium intensity period absorption trough crest wave speed alternating current (AC) charge conductor current direct current (DC) electricity electromagnet induction ions motor ohms law parallel circuit permanent magnet resistance series circuit voltage work Things you need to be able to recognize or know Know how wave speed impacts frequency and pitch Know the parts of the electromagnetic spectrum and which have the highest frequency and energy Know how electromagnetic waves transfer energy Understand what frequency is and how it works What can affect the frequency of a sound in a musical instrument (think about lab) Be able to calculate wave speed (frequency x wave length) Know how mechanical waves transmits energy Recognize interference, reflection, refraction, absorption and diffract of waves Describe how mechanical wave speed change as they move through different media and different temperatures Describe and recognize what happens to wave in the Doppler Effect Recognize the difference between static and current Know how electricity works Know what static discharge is and why it occurs Know what conduction is and how it applies to electrons Know the difference between an insulator and conductor Know how to work Ohm’s Law Recognize and know how parallel and series circuits work and which way the electrons move Know what a transformer is and how it works Know the difference between a motor and a generator Recognize the difference between AC and DC current Know what a permanent magnet is and its applications Practicum Be able to explain how a house is wired with both series and parallel and the benefits to using those types of circuits.
