Christmas Light Webquest

Emma Nicholas 1st hour

Testable Question, IV and DV, Hypothesis

Testable Question: How does the type of circuit affect the strand of Christmas lights with a burned out bulb? IV: Parallel Circuit DV: Number of Bulbs Hypothesis: If the Christmas lights are arranged in a parallel circuit, then when one bulb bursts, the other bulbs won't light up.

Parallel Circuit

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Observations

I noticed that all of the bulbs are lit up brightly.

Parallel Circuit (One bulb removed)

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Observation and Hypothesis 2

I noticed that when one bulb is removed, the other still light up.

Series Circuit

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Observation

I noticed that the lights were all lit up.

Series Circuit (One bulb removed)

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Observation

I noticed that when one bulb bursts, the others don't stay lit because the circuit is not complete.

Data Table

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Conclusion

In conclusion, a parallel circuit is the best series to use because when one bulb bursts, the others still light up. Also, the bulbs are brighter. In a series circuit, the bulbs are not very bright. When a bulb bursts, the others don't stay lit up.