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Sponge

Sponge. Suppose substance A has a temperature of -15 degrees Celsius and substance B has a temperature of -8 degrees Celsius . If substance A is placed in contact with substance B, in which direction will the thermal energy flow?. Temperature Comparing Heat and Temperature.

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Sponge

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  1. Sponge • Suppose substance A has a temperature of -15 degrees Celsius and substance B has a temperature of -8 degrees Celsius . If substance A is placed in contact with substance B, in which direction will the thermal energy flow?

  2. TemperatureComparing Heat and Temperature I can define temperature. I can explain how heat and temperature are related.

  3. What does temperature measure? • Temperature measures the average motion of the particles in a substance. • A thermometer is the tool used to report the quantitative data. • Let’s take a look http://www.mathsisfun.com/measure/thermometer.html

  4. Example: • Both pots are filled with water. • Both pots are being heated at 100 degrees Celsius. • Can you make an educated guess for which pot will boil first? • Explain the reason your educated guess.

  5. …and the results • The small pot boiled first! (10 minutes) • The large pot took longer to boil. (15 minutes) • Why?

  6. More water means MORE particles!!! • You have to add MORE energy to get all those particles up to speed. • The smaller pot boiled first because it has few particles and takes less energy! • Once both pots reach boiling point, they will have the same temperature (100 degrees Celsius) • Check Point: A cup of lemonade was left on the table by the pool. The lemonade and the pool are the same temperature. Which have more energy? Why?

  7. Hot Water in Cold Water Experiment • Let’s put it all together • What do we know about heat? • What do we know about temperature? • What do we want to find out by conducting this experiment? • How will what we know help us while conducting this experiment?

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