1. Temperature and Density Lesson 5

2. Resources http://phet.colorado.edu/en/simulation/gas -properties http://phet.colorado.edu/en/simulation/gas -properties

3. Alcohol Thermometer Observations: Explanation:

4. Galileo’s Thermometer Observations: Explanation:

5. Helium Balloon If you are sad that your helium balloon is starting to sink and wanted the balloon to rise again, would you turn up the heat, or turn on the air conditioner? Explain your answer.

6. Hand Boiler Observations: Explanation:

7. Big Ideas of Lesson 5: As temperature increases density decreases. ◦ As temperature increases the speed of the molecules increase. ◦ As the speed of the molecules increase the volume increases. ◦ As the volume increases the density decreases (if the mass stays the same).

8. Water: The Exception to the Rule http://www.youtube.com/watch?v=T4GC ShGvw-M&safe=active Why does water expand when it freezes? - Naked Science Scrapbook http://www.youtube.com/watch?v=T4GCShGvw-M&safe=active