Energy in a system. A local pool was getting ready for a night time pool party. They heated the water to 85°F.
When the party started the water felt very warm, but as the night went on it felt cooler and
cooler. An employee of the pool decided to record the temperature every half an hour.
Temperature of Pool Water over Time
86
84
82
80
Temperature of the Pool Water
(degrees fahrenheit)
78
76
74
72
Wd00-6
10:30PM
11:00PM
Waoe 11
8:00PM
8:30PM
9:30PM
10:00PM
Mid-Night
Explain why the temperature of the pool was changing. In your reponse, be sure to include:
what happened to the heat that was leaving the pool.
what must be true of the air temperature based on the recorded pool temperatures.