Place the same amount of ice water/ice cubes into three bowls that are preferably made of the same material, such as plastic or ceramic. Obtain three different covers where one is black, one is white, and the other shiny. Cover or wrap the bowls with the materials. Place them outside when it is sunny or under the heat source for twenty to thirty minutes.
At least every five minutes record the temperature and the time. The water in the black container will heat up more quickly than the others.
The experiment can also be done using one bowl at a time and with one thermometer. Switch the bowl covering and change the water to compare how the water heats under different materials. You may substitute containers that are black, white, and shiny, instead of using covers. The containers should be as uniform as possible, and should be of the same material such as metal or plastic.
Write your inferences after 20 minutes.
Answers
Lets see now. Some intuitive center in my brain is screaming 'it will remain the same', but we will try to think it over.
In the first state, we have an ice cube of mass m floating in the water. If it is floating (in equilibrium), it will have to displace enough water to support its weight. How much is that? It is just Volume = m/d , where m is the mass of the ice cube, and d is the density of water.
In the second state, where the ice has melted, it turns into water of volume.... Volume = m/d! exactly the same volume as it displaced before. So the added volume is the same, so the level of the water will not change.
As a matter of fact, as long as objects are floating (i.e. they don't rest on the bottom) they displace enough water to support their mass. Since by turning from solid to liquid, the mass of water does not change (well, maybe it does, due to mass-energy equivalence, but that's _really_ negligible) it will keep displacing the same amount of water.
However, note that this may not apply to everything. If you had solid alcohol floating in water, when it melts, the level would drop, because water and alcohol mix at the molecular level; i.e. water filling spaces among alcohol molecules.
Answer:
This thermoforming technique begins with extruded or rolled plastic sheets of the desired thickness that are fed into a pre-heating machine. ... While in place the plastic is cooled until it reaches the desired rigidity. The final cover is ejected with reverse air flow before being trimmed or otherwise finished.