Conceptual Physics Review Packet for Final Exam Ch. 25 & 26 1) Define frequency, time period, amplitude and wavelength of a wave. 2) How is velocity related to wavelength and frequency? 3) Do waves transmit matter or energy? 4) What are longitudinal and transverse waves? Give examples. 5) What is constructive and destructive interference? How are the amplitudes of the resultant wave determined in the two types of interference? 6) What is Doppler effect? How does frequency change when the source or observer move (a) toward each other, (b) away from each other. 7) When is a sonic boom caused? 8) Can sound travel in vacuum. In which medium solid, liquid or gas, does sound travel faster. 9) What is resonance? 10) Does the velocity of sound increase or decrease with temperature. Does sound travel faster in gas molecules of greater mass or less mass? Ch. 32 1) What are the two charge carriers in nature? 2) How does Coulomb’s law vary with distance? 3) What is conservation of charge? 4) What are charging by contact, induction and polarization? 5) How do charge carriers behave in insulators and conductors? 6) Which is safest location in lightning strike? 7) What is the electric field inside a charged hollow metal conductor? Ch. 33 1) Define electric potential and electric potential energy. What are their units? 2) Work is done to bring an electron near a negatively charged sphere. If so what happens to the electron’s potential energy. 3) What is a Van de Graff generator? How does it work? Ch. 34 1) What does electric current consist of? In solids what are the charge carriers. 2) What are the units of potential, resistance and current? 3) How does resistance vary with temperature? 4) For current flowing in a wire, where do the electrons come from? 5) What are AC and DC current? Give examples. 6) What are the AC voltage and frequency in North America? 7) Express power in terms of voltage and current. What is the unit of power? How is power related to energy and time? 8) What is Ohm’s Law? Give the equation. 9) How does current flow in AC circuit. Does current flow in a closed or open circuit. 10) Are electric circuits in homes in series or parallel? 11) What is a short circuit? When does it happen? 12) Is resistance greater for thin or thick filament? What about current? Ch.35 1) What are series and parallel circuit? 2) Is current constant in a series circuit? How do you measure total resistance in a series circuit? If you increase the number of devices in a series circuit do you increase or decrease a. current or b. resistance. 3) Is voltage constant in a parallel circuit? How do you measure total resistance in a parallel circuit? If you increase the number of devices in a parallel circuit do you increase or decrease a. current or b. resistance. 4) Are electric circuits in homes in series or parallel? 5) What is a short circuit? When does it happen? 6) Is resistance greater for thin or thick filament?