Jennifer is studying thermal equilibrium.
She puts a pineapple in a freezer for two days which brings the pineapple's temperature down to -20 °C (-4 °F) measured with a wireless internal probe.
She gets permission to do an experiment at her large neighborhood swimming pool during a hot week in August when the temperature of the pool is 32 °C (90 °F).
She drops the pineapple in the swimming pool and measures the temperature of the pineapple and the pool every 30 minutes. After 3 ½ hours, the pineapple's temperature increases to 32 °C (90 °F). The pool's temperature does not change. Based upon the description of thermal equilibrium, she was expecting the pool's temperature to decrease.
1. When the frozen pineapple was in the hot pool, what was the flow of thermal energy?
2. How could Jennifer modify this experiment to be able to observe a decrease in water temperature?
