A study was conducted to test the efficiency of the TPS created, by changing the size of the flame. The flame sizes tested were 3 cm, 5cm, and 7cm. It was predicted that if the flame was bigger, then the screw would fall out quicker because there was more of the flame exposed to the TPS, causing it to deteriorate quicker. It was found that 5 cm flame caused the least amount of damage to the TPS. It showed that the TPS was very effective, because the screw stayed attached to the wooden dowel for the longest period of time. With the 5cm flame, the screw stayed attached for an average of 83.005 seconds as shown in Table 2. The hypothesis was not supported by the data because it was originally predicted that the 3 cm flame would keep the screw
…show more content…
A possible justification is that the 5 cm flame was directed right at the TPS, so the heat was either absorbed or reflected. The outer layer of the TPS is copper, which is a conductor. A conductor is “When heat is transferred via conduction, the substance itself does not flow; rather, heat is transferred internally, by vibrations of atoms and molecules/Copper, a good thermal conductor, which is why some pots and pans have copper bases, has a thermal conductivity of 390 J / (s m °C)” (Heat Transfer “Conduction”). The copper absorbed the heat so it did not get to the glue and screw. The 7 cm flame had the shortest trials because that’s when the height of the TPS was changed to be lower. For those trials, the flame was under the TPS, which was where the hole for the screw was. The heat from the flame rose to the screw and glue because “Warm air rises when it's surrounded by cold air because of its lower density. Yes, that's due to heat” (Heat Rises...and Falls — Stack Effect, Air Movement, & Heat Flow, Energy Vanguard). The air around the screw and glue was colder than the flame, so the heat rose and melted the glue very quickly because the hot air collected around the screw. The screw is made out of “Materials such as stainless steel, brass, nickel alloys or aluminum alloy” (What Materials are Screws Made Of? ehow), which are also conductors, so the top of the screw got hot and melted the
A possible justification is that the 5 cm flame was directed right at the TPS, so the heat was either absorbed or reflected. The outer layer of the TPS is copper, which is a conductor. A conductor is “When heat is transferred via conduction, the substance itself does not flow; rather, heat is transferred internally, by vibrations of atoms and molecules/Copper, a good thermal conductor, which is why some pots and pans have copper bases, has a thermal conductivity of 390 J / (s m °C)” (Heat Transfer “Conduction”). The copper absorbed the heat so it did not get to the glue and screw. The 7 cm flame had the shortest trials because that’s when the height of the TPS was changed to be lower. For those trials, the flame was under the TPS, which was where the hole for the screw was. The heat from the flame rose to the screw and glue because “Warm air rises when it's surrounded by cold air because of its lower density. Yes, that's due to heat” (Heat Rises...and Falls — Stack Effect, Air Movement, & Heat Flow, Energy Vanguard). The air around the screw and glue was colder than the flame, so the heat rose and melted the glue very quickly because the hot air collected around the screw. The screw is made out of “Materials such as stainless steel, brass, nickel alloys or aluminum alloy” (What Materials are Screws Made Of? ehow), which are also conductors, so the top of the screw got hot and melted the