Experiment on Lightbulbs' Ability to Melt Chocolate
A group of students at Naul National School conducted an experiment to determine how different lightbulbs affect the melting of chocolate. They found that higher wattage bulbs melted the chocolate quicker, with older filament bulbs outperforming newer energy-saving ones. The study concluded that higher wattage bulbs emitted more heat, aiding in melting the chocolate faster at the expense of higher energy consumption.
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Presentation Transcript
How long does it take certain lightbulbs to melt chocolate? 5thand 6thClass, Naul National School
Predictions We predicted that the stronger light would melt the chocolate the quickest. We decided for a fair trial that we would need to keep conditions the same for each light bulb. This meant using the same brand of chocolate and the same plate.
Preparation We collected all the materials we would need We got an old lamp, lightbulbs in different strengths, cooking chocolate, plate, thermometer and a stopwatch. We used pegs to balance the plate on the lamp.
Method Insert chosen lightbulb into lamp Carefully position plate over the lamp Place chocolate in centre of plate Turn the lamp and timer on at the same time Record the results Repeat the process for each bulb individually
Results Bulb Time first sign of melting 1 hour on the stopwatch 1 hour on the stopwatch 1 hour on the stopwatch 15 minutes 15 minutes Temperature on thermometer 27 C Final observation Temperature on thermometer 30 C 100W 1 hour 30 minutes 1 hour 30 minutes 1 hour 30 minutes 30 minutes 30 minutes 60W 21.5 C 25 C 40W 21.3 C 21.8 C 60W (old style) 40W (old style) 36.5 C 34.7 C 40.1 C 39.8 C
Observations We observed that the 100W bulb did a better job of melting the chocolate than the 60W bulb and the 40W bulb We decided to try two old filament bulbs. We found that these melted the chocolate much quicker than the newer bulbs
Conclusion We concluded that the higher the wattage of the bulb, the greater the chance of it melting the chocolate. We also decided that the older bulbs were far superior for melting chocolate than the newer energy saver bulbs. We noted that the older bulbs would need a lot more electricity to power because they not only emit light, but they also emit a great deal of heat. This means that they would not be as good for the environment as the newer energy saving bulbs.
