6.+Liziana

__**HEAT AND TEMPERATURE**__

Heat moves in 3 ways:
 * Radiation
 * Conduction &
 * Convection

Radiation happens when heat moves in energy waves. An object that causes heat to move as radiation is a microwave.

Conduction occurrs when an object is able to obtain heat meaning that heat can be felt when one touches the object. E.g. touching a boiling jug.

Convection is when a substance that can flow such as; water or air, is heated with gravity present. E.g. water inside a boiling pot.

**Results table** **Conclusion:** Results show that the smaller quantity of oil or water (40ml), showed greater increase in temperature after being heated for the same amount of time and then checked to measure the increase in temperature. Also, cooking oil had the greatest rise in temperature after being heated on the element for an equal mount of time to the water.
 * =  ||||= Temperature of the liquid ( ° C) ||= Rise in temperature ( ° C) ||
 * ^  ||= Before heating ||= After heating ||^   ||
 * = 40mL water ||= 22 ||= 37 ||= 15 ||
 * = 80 mL water ||= 20 ||= 29 ||= 9 ||
 * = 40 mL cooking oil ||= 21 ||= 44 ||= 23 ||
 * = 80 mL cooking oil ||= 23 ||= 36 ||= 13 ||

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.

Changing the colour of the can may also alter the rise in temperature. From the results shown, it looks like the transparent, plastic bottle and darker coloured cans show the greatest rise in temperature.

2. Explain why we can only say it is a 'possible' trend. Because we actually had two variables in this test (the can and bottle size and shape and the colour of each can), so we cannot call this a fair test. Also, not enough evidence was found to come o the conclusion that there was a definite trend.

DISCUSSION: 1. Explain the trend above in terms of how heat moves. Darker colours are able to obtain more light by absorbing more and reflecting less.

2. Discuss how the experiment could be improved. We could improve this experiment by using an independent variable which could just be the colour of the cans. Also we should use cans which are of the same shape and size including the control. We should have repeated the experiment too, to conclude that others who did the same experiment after us would get the same results.