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Transcript
Clover Park School District Physics Curriculum Guide 2013-2014 Timeline Unit 3 6 weeks Electricity and Magnetism (Electrostatics, Circuits, Electric Fields, Electromagnetism) Stage 1 – Desired Results Established Goals (Non-negotiables) (Washington State Content Science Standards) Students will be able to independently use their learning to … Understand how electric power is generated and how energy is transferred by potential difference in order to do work illustrate the electromagnetic spectrum with a labeled diagram, showing how regions of the spectrum differ regarding wavelength, frequency, and energy, and how they are used (e.g., infrared in heat lamps, microwaves for heating food, X-rays for medical imagining.) 9-11 PS1G Electrical force is a force of nature independent of gravity that exists between charged objects. Opposite charges attract while like charges repel. 9-11 PS1H Electricity and magnetism are two aspects of a single electromagnetic force. Moving electric charges produce magnetic forces, and moving magnets produce electric forces. 9-11 PS3E Electromagnetic waves differ from physical waves because they do not require a medium and they all travel at the same speed in a vacuum. This is the maximum speed that any object or wave can travel. Forms of electromagnetic waves include Xrays, ultraviolet, visible light, infrared, and radio. Meaning Understandings (Non-negotiables) Students will understand that … • • • August 2013 Transfer Two charged objects will attract or repel each other, and be able to explain why. An electric current flowing in a wire will create a magnetic field around the wire (electromagnetic effect). Moving a magnet near a wire will cause an electric current to flow in the wire (the generator effect). Recommended Essential Questions Students will keep considering … What causes static electricity? How do magnets work? How is electrical energy converted to mechanical energy in electric motors? How is electric energy stored and transferred? What’s the difference between a parallel and a series circuit? Which one is better? What causes the Northern Lights? 1 of 3 Clover Park School District Physics Curriculum Guide 2013-2014 Acquisition Students will know … • The concept of electric charge, the types of charge and the attraction and repulsion of charges. • That charges exert force on other charges over a distance in an electric field. • Work done to move a charge in an electric field produces an electric potential difference. • the definition and function of capacitance • Electric charges flow in a current and energy is transferred in an electric circuit. • Ohm’s Law describes the relationship between resistance, voltage and current in a circuit • The properties of magnets • How charged particles experience force in a magnetic field. • That a changing magnetic field produces an electric current Students will be skilled at … August 2013 Using Coulomb’s Law to calculate the magnitude and direction of the force on a charge due to another point charge. Describing and calculating the electric field of a single point charge. Interpreting an electric field diagram. Determine the electric potential in the vicinity of one or more point charges. Calculating stored charge and voltage for a capacitor. Relate voltage, charge and stored energy for a capacitor Recognize situations in which energy stored in a capacitor is converted to other forms. Describing the magnitude and direction of the current in terms of the rate of flow of positive and negative charge. Using Ohm’s Law to calculate current, voltage and resistance in a system. Demonstrating how the resistance of a resistor depends upon its length and cross-sectional area, and apply this in comparing current flow in different resistor styles. Identify on a circuit diagram whether resistors are in series or in Instructional Materials Textbook: Physics by Serway & Faughn, 2012 Common Labs: (probe-ware when appropriate) • • • • • • • • • • • • • • • Electrostatics Resistors & Current Capacitors Current & Resistance Resistors in Circuits Magnetism Magnetism from Electricity Magnetic Field Strenth Electromagnetic Induction Science Media and journals Web Animations Discovery Education Video/DVD Modeling Materials Van de Graaff Generator 2 of 3 Clover Park School District Physics Curriculum Guide 2013-2014 August 2013 parallel. Determine the ratio of the voltages across resistors connected in series in parallel circuits. Calculating the magnitude and direction of the force in terms of q, v, and B Determining the direction of a magnetic field from information about the forces experienced by charged particles moving through that field. Calculating the magnitude and direction of the force on a straight segment of current carrying wire in a uniform magnetic field Indicating the direction of magnetic forces on a current-carrying loop of wire in a magnetic field Calculating the magnitude and direction of the induced emf and current in a loop of wire or a conducting bar 3 of 3