Electricity+&+Magnetism+Unit+Learning+Targets

Learning Target: // Electricity is the flow of electrons through a closed circuit. // 1. Define a charge as a property of matter that is characterized as an absence or excess of electrons (negative charge) 2. Understand that like charges repel, or push away, from each other 3. Understand that unlike charges attract, or pull toward, each other 1. a voltage source (battery), 2. conductor-means of transfer (wires) 3. receiver (resistance bulbs, motors, fans, electrical device) 4. switch (to open/close circuits)
 * ** Describe the interactions (i.e., repel, attract) of like and unlike charges (i.e., magnetic, static electric, electrical) **
 * ** Diagram and identify a complete electric circuit by: **
 * ** Observe and describe the evidence of energy being transferred in a closed series circuit (i.e., light is on) **

Learning Target: // There are multiple ways to change the amount of energy flowing through a circuit (number of receivers and energy sources, type of transfer materials, type of circuit) //

1. resistance (number of receivers), 2. amount of voltage (number of energy sources), 3. kind of transfer materials on the current being transferred through a circuit (e.g., brightness of light, speed of motor) · ** Define resistance as a property of material that determines how easily a charge can move through it ** · ** Define voltage as a measure of electrical potential ** o // electrical potential //** : ** = · Define a conductor/resistor/insulator =
 * ** Describe the effects of: **


 * ** Classify materials as conductors or insulators of electricity when placed within a circuit (e.g., wood, pencil lead, plastic, glass, aluminum foil, air, water) **

1. Identify a series circuit 2. Identify a parallel circuit
 * ** Diagram and distinguish between complete series and parallel circuits **

1. __ Series circuit __ – uses less wire (advantage), when one bulb goes out, all go out (disadvantage), when adding bulbs to the circuit, bulbs become dimmer (disadvantage) 2. __ Parallel circuit __ – bulbs have equal brightness (advantage), each bulb has its own path to voltage source so when one light goes out the others remain lit (advantage), use more wire (disadvantage)
 * I** dentify advantages and disadvantages of series and parallel circuits **