Experiment # 2: Thermal Properties of Water
Materials Needed:
* 2 flat aluminum cake pans (disposable)
* sand
* thermometer
* a liter measure
* aluminum foil
Instructions:
* Punch holes in the bottom of one cake pan.
* Fill it with hot sand and cover with aluminum foil (shiny surface towards the sand)
* Place the thermometer in the sand. Record the temperature of the sand.
* Obtain one liter of cool water.
* Record the temperature.
* Pour it over the sand and collect the water as it drains out.
* Immediately record the temperature of the sand and the water collected.
* Record your results in a chart.
Q1: What is your explanation of the results?
Q2: How does the answer to Q1 apply to your blood circulating through your body when you are exercising?
What we learned:
* Heat is transferred to water.
* Water absorbs the heat.
* Application: Perspiration cools our body as it absorbs the heat. How?
blood transfers heat from our muscles to ----> skin, produces ---> perspiration ----> helps cool our body
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