The cup's water is hotter, so heat moves from the cup's water to the bowl's water.

After 5 minutes, the cup's thermometer reads 84 degrees Fahrenheit. It went down.

The bowl's thermometer reads 56 degrees Fahrenheit. It went up.

After 5 minutes: the cup's reading went down to 84 degrees Fahrenheit, the bowl's went up to 56 degrees Fahrenheit.

After 15 minutes, both thermometers read 70 degrees Fahrenheit.

The two temperatures are the same, so heat stops moving.

Both temperatures ended up between 40 and 100 degrees Fahrenheit.

After 15 minutes: both read 70 degrees Fahrenheit.

The readings, in degrees Fahrenheit.

We left one thing out of this story: the air around the bowl.