Introduction:Conduction is heat transferred through a medium which its particles do not move for example when you light a fire under a spoon and when you touch the handle of the spoon it will be hot. Convection is transferred through a medium in which its particles travels in fluids (gas). This is a thermal heat experiment that requires hot and cold water. We started with two containers of water, which is identical in shape and also identical amounts of water. The only difference between the two was that the water in one was at a higher (uniform) temperature than the water in the other. Of course, if the hot water had started at 99.
9° C, and the cold water at 0.01° C, then clearly under those circumstances, the initially cooler water would have frozen first. However, under some conditions the initially warmer water will freeze first — if that happens, you have seen the Mpemba effect which describes the phenomenon.
Research Question:How does the temperature of water affect their free? Hypothesis:Cold water will freeze faster than hot water because hot water needs longer time to cool down. This is because the particles in hot water are moving faster than particles in cold water, so it takes longer time for the particles in the hot water to slow down than the cold water. A liquid can freeze when all of their particles are moving really slow, so the hot water will freeze slower. Variables:Independent Variable:5 different temperatures of water (10?C, 30?C, 50?C, 70?C, 90?C).Dependent Variable:The time taken for each water to freeze, measured in minutes.
Constant Variable:Mass of each type of waterThe volume of each type of waterThe final temperature of both type of waterThe temperature of the environmentThe material of the bowl Apparatus:5x 500ml beaker500ml of 10?C water 500ml of 30?C water500ml of 50?C water500ml of 70?C water500ml of 90?C water1x timer1x freezer5x camera1x freezerThermometerPan (for boiling)Method:Heat each 500 ml of water to the intended temperaturePour each of them to each beakerPut them and each camera to record them into the freezerRecord the time for the water to freeze using the timerRecord the time needed by each type of water to freeze.Safety Guideline:Be careful when heating the water, so that you will not get hurt. Wear lab coat and gloves.Be careful when you lift the boiling water make sure you are balanced.
If you are not used to boil water, you should ask adults for help.Works Cited”Does Hot Water Freeze Faster than Cold Water?” Information about Does Hot Water Freeze Faster than Cold Water? with Fizzics Education | Kids Science Experiments, www.fizzicseducation.com.
“Does Hot Water Really Freeze Faster Than Cold Water?” ScienceAlert, www.sciencealert.com/does-hot-water-really-freeze-faster-than-cold-water.