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# Christmas Light Webquest

### Working with parallel and series circuits.

This project was a study on which circuit works better for a Christmas light strand that has gone bulb go out.

# Testable Question

How does the type of circuit affect the strand of Christmas lights with a burned out bulb?

# Independent Variable

The I.V. is the type of circuit used.

# Dependent Variable

The D.V. is which bulbs work after one bulb doesn't.

# Hypothesis

If Christmas lights are arranged in a parallel circuit then when 1 bulb bursts then the others will still light up and work.

# Parallel Circuit Screenshot

This is a parallel circuit, which gives the current a choice of two ways to travel.

# Observations

I observed that the more batteries I added, the faster the current went and the brighter the bulbs shined. Also I noticed that the current had two ways to travel instead of just one.

This is the same parallel circuit with a bulb missing

# Observations

I observed that even when one bulb "burst" the parallel circuit still caused the others to work, which is ideal for your Christmas lights you put on your tree.

# Hypothesis

If Christmas lights are arranged in a series circuit then when 1 bulb bursts the others will not work.

# Series Circuit Screenshot

This is a series circuit, which only gives the current one way to travel.

# Observations

I noticed that the light isn't as bright with just one battery. Also I observed that there is only one way to get the current through.

This is where bulb is disconnected from the rest, causing all other bulbs to stop working.

# Observations

I observed that in a series circuit it only has one way to travel, causing all other bulbs to stop working.

# Conclusion

I conclude that the parallel circuit will work best for a Christmas light strand