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Download Electrical Circuits pt.1 Station 1: Connect a Light Bulb Materials: One
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Transcript
Station 1: Connect a Light Bulb Materials: One D Battery, One wire, One bulb Task: Connect light bulb to battery with only one wire and make the bulb light up Notes/Conclusions: Explain here how you found the solution, any difficulty you had, and other relevant info Drawing: Station 2: Open and Closed Circuits/ Switches Materials: One 9 V Battery, One switch, Xmas lights, One piece of wire Task: Connect the light to battery and make the bulb light up. Disconnect one end and add a switch. Define these terms: Open circuit Closed circuit Switch Drawing: Station 3: Series Circuits Materials: One 9 V Battery, Three Xmas lights Task: Connect one light to battery and observe brightness, then add each of the others, one at a time in series and observe what happens to the brightness of the light. Define this term: series circuit Notes/Observations: Drawing: Station 4: Series Circuits Materials: One 9 V Battery, Three Xmas lights Task: Connect all three xmas lights to the battery so that each light has a separate pathway back to the battery. If all lights come on, disconnect one bulb and see what happens to the other lights. Define this term: parallel circuit Notes/Observations: Drawing: Station 5: Conductivity Test Materials: One 9 V Battery, Three Xmas lights, voltmeter, Two wires, random conductor/insulators Task: Connect all three xmas lights to the battery in series and add a voltmeter and 2 wires. Record the voltage of your circuit. Add several random objects to determine if they conduct electricity and record their results Results/Observations: Drawing: Station 6: Resistors Materials: One 9 V Battery, Three Xmas lights, Ammeter, Two wires, Resistors Task: Connect all three xmas lights to the battery in series and add a Ammeter. Record the current of your circuit. Add three different resistors and record the new current readings. Define these terms: Current Resistance Results/Observations: Drawing: Station 7: Electromagnet Materials: One 9 V Battery, One Iron Nail, Copper Wire, Paper Clips Task: Create a simple electromagnet with the wire and nails and try to pick up several paperclips with it. Define these terms: Current Resistance Results/Observations: Drawing: Open the program Circuit Construction Kit (AC + DC) 3.20. If at home go to this site to run the program http://phet.colorado.edu/en/simulation/circuit-construction-kit-ac Activity 1: Connect a Light Bulb Materials: One D Battery, One wire, One bulb Task: Connect light bulb to battery with only one wire and make the bulb light up. Add a second battery and see what happens to the light. Notes/Conclusions: Compare this activity to when you did it with real wires and bulbs. Drawing: Activity 2: Series Circuits Task: Connect light bulbs and batteries and build a variety of series circuits. Add a voltmeter and calculate the voltage used. Try adding a switch as well. Make at least three different circuits. Results/Observations: Drawings: Activity 3: Parallel Circuits Task: Connect light bulbs and batteries and build a variety of parallel circuits. Add a voltmeter and calculate the voltage used. Make at least three different circuits. Results/Observations: Drawings: Activity 4: Conductivity Test Task: Create a series circuit and add various objects from your grab bag to complete the circuit and determine if they conduct electricity. Add a voltmeter and determine if the voltage changes. Results/Observations: Drawings: Activity 5: Current, Voltage, and Resistance Task: Connect light bulbs and batteries and build a variety of series or parallel circuits. Add a voltmeter and calculate the voltage used. Add an ammeter and record the current at several locations on the circuit. Make at least three different circuits. Results/Observations: Does the Resistance or Voltage Change at different places along the circuit? Explain. Drawings: Activity 6: Electrical Symbols Task: Look the chart of Common Symbols and try to create the circuits in the following schematic drawings and fill in the table. (Note: there are different drawings for bulbs used.) A. Using voltage in series circuits Figure 1 Figure 2 # of bulbs Figure 3 Battery voltage (v) Current into battery (A) Brightness of bulbs 1 2 B. Using voltage in parallel circuits 3 Redo Part III but use figures 4-6 for the circuits. Make a new table and answer the questions. Figure 4 # of bulbs 1 2 3 Figure 5 Battery voltage (v) Current into battery (A) Figure 6 Brightness of bulbs Results/Observations: Summarize the relationships you observed between Voltage and Current and explain what you think is happening. Activity 7: Resistance Task: Connect light bulbs and batteries and resistors that you see in Figure A and B and fill in the table below Results: Resistor Voltage (Volts) Current (amps) Resistance in the circuit (ohms) R=V/I 1 2 3 Conclusion: Figure A DC Figure B D C DC DC R1 R2 R1 R2 R3 R3 Activity 8: Explore Task: Create as many different circuits as you can and try different items(capacitors, etc.) Draw a life-like drawing of your favorite circuit and a schematic drawing of the same one. Results/Observations: Drawings: