Insert one thermometer through the slot of each lid and measure the initial air temperature of Cup 1 and Cup 2. Record your data in the table.
Pour hot water into Cup 1 and cold water into Cup 2. The cups should be about half full.
Safety Note: Hot Water
Handle hot water with care. If spilled, it could burn your skin.
Replace the lids and thermometers, making sure the thermometers do NOT touch the water in either cup.
Wait 2 minutes and measure the final temperature of the air in Cup 1 and Cup 2. Record this data in the table.
Initial Air Temperature
(ºC) Final Air Temperature
(ºC)
Cup 1
(hot water)
Cup 2
(cold water)
Initial Air Temperature (ºC) Final Air Temperature (ºC)
Cup 1 (hot water) Cup 2 (cold water)
25 22
25 20