6.+Ann

Conduction- Walking on cement on a hot day- it burns your feet! Convection- A heater in a swimming pool Radiation- The sun

My device is a hot water bottle. It uses these three ways to move heat because touching the bottle makes you warm(conduction), holding your hands over the bottle makes you warm (radiation), and it uses convection when you pour the hot water into cold water that is already inside. I found that from this experiment, things in a smaller quantity heat up faster and are a higher temperature. The oil was an overall higher temperature at the end than the water. I think that smaller things heat up faster because the 'density' of the heat is higher.

RESULTS (for 100 mL Water):
of the liquid (° C) || Rise in temperature (° C) || Names in Group ||
 * |||| Temperature
 * ^  || Initial || Final ||^   ||
 * Colourless bottle || 21 || 27 || 6 || Liziana, Heetasha and Ann ||
 * Red can || 21 || 26 || 5 || Maddie, Eilish, Paula ||
 * Blue can || 21 || 25 || 4 || Amy Jessie Erin Priya ||
 * Blue can || 20 || 26 || 6 || Callayne Lily Chloe ||
 * Silver can || 21 || 24 || 3 || Sarah, Hra, Livvy ||
 * Silver can || 21 || 24 || 3 || Stefie, Greta, Kate, Gabby ||
 * Green can (long) || 21 || 27 || 6 || Stefie, Greta, Kate, Gabby ||
 * Black can (long) || 21 || 26 || 5 || Alice,Taylor,harriet,Tessa ||

CONCLUSION: 1. Describe one possible trend in the data. The change of colour on the cans does vary the temperature by up to 6 degrees. I think that the longer the can the higher the rise in temperature is.

2. Explain why we can only say it is a 'possible' trend. It can only be a possible trend because we have not done enough experiments to confirm it and it is not exactly a perfect fit.

DISCUSSION: 1. Explain the trend above in terms of how heat moves. By looking at this trend I think that heat is absorbed best when there is more surface area to absorb it.

2. Discuss how the experiment could be improved Do more experiments, don't change the shape or material.