LED:NMSO Workshop 11/05/ SHOCK VALUE NM State Science Olympiad 2011

LED:NMSO Workshop 11/05/ SHOCK VALUE Event Parameters Students are allowed to use a non- programmable calculator. Computers are not allowed. Each team may bring one 8.5” x 11” two- sided page of notes that contain information in any form from any source. The event supervisor provides any needed equipment.

LED:NMSO Workshop 11/05/ SHOCK VALUE Competition Topics 1.Basic electrical DC circuit theory concepts of voltage levels current flow and direction, electrical pathways, volts, amperes, ohms, schematics, ohms law.

LED:NMSO Workshop 11/05/ SHOCK VALUE Competition Topics 2.Basic electrical device concepts battery polarity, parallel vs. series wiring of components, light bulb and motor connections, dry vs. wet cells. No semiconductors will be used.

LED:NMSO Workshop 11/05/ SHOCK VALUE Competition Topics 3.Basic electrical circuit construction/ analysis switches, power source, voltmeter measurements, light bulb/motor connections.

LED:NMSO Workshop 11/05/ SHOCK VALUE Competition Topics 4.Basic magnetism concepts North and South poles, Earth's magnetic field, Electromagnet principles, magnetic vs. nonmagnetic materials, magnet shapes/types.

LED:NMSO Workshop 11/05/ SHOCK VALUE Competition Topics 5.Basic magnetic applications use of a compass to determine directions/poles of a magnet, operation of an electromagnet, use of magnets in motors.

LED:NMSO Workshop 11/05/ SHOCK VALUE Changes from 2010 Competition must have at least one task or question from each of the five areas. The rules last year did not have this requirement. The NM state competition had tasks/questions from each of the five areas. Competition must consist of both hands-on tasks and questions. Last year, the rules said “will consist.” The NM state competition last year had both hands-on tasks and question stations. The 2011 rules state “Topics that must not be included in the competition are: semiconductors, AC circuit theory and devices, capacitors, inductors”. None of these were included in the competition last year.

LED:NMSO Workshop 11/05/ SHOCK VALUE Competition Format There are two competition times: one for Even and the other for the Odd numbered teams. The competition will consist of at least six stations that the teams rotate through. Each station focuses on one of the five areas. Teams have 6½ minutes (depending on the number of stations) at each station. They are not permitted to return to a station.

LED:NMSO Workshop 11/05/ SHOCK VALUE Task/Question Examples Build a specified circuit. Identify parallel or series circuits. Measure voltage in a circuit. Identify circuit symbols. Questions about magnets. Identify North and South poles of a magnet.

LED:NMSO Workshop 11/05/ SHOCK VALUE Circuit Symbols

LED:NMSO Workshop 11/05/ SHOCK VALUE Series and Parallel Circuits

LED:NMSO Workshop 11/05/ SHOCK VALUE Constructing Electrical Circuits Construct a series circuit containing a battery, light bulb, and switch. Construct a parallel circuit containing a battery, two light bulbs, and switch.

LED:NMSO Workshop 11/05/ SHOCK VALUE Ohm’s Law V = I R Potential difference: V volts Current:Iamps Resistance:Rohms

LED:NMSO Workshop 11/05/ SHOCK VALUE Ohm’s Law Ohm’s law states that current is inversely proportional to resistance How much current flows through a lamp that has a resistance of 60 ohms when 12 V is connected across it? I = V/ R I = 12 V / 60 ohms = 0.2 amps

LED:NMSO Workshop 11/05/ SHOCK VALUE Voltage Measurement