Mrs. Hale describes her as a "sweet and pretty, but kind of timid and-fluttery."
Explanation:
Minnie Foster was likened by Mrs. Hale to a bird because she was a sweet and pretty woman. She also had a reserved nature as can be seen in timid and fluttery nature. The later attributes must have been worsened by her husband.
Mr. John Wright who was described as a hard man must have worsened her condition because it would not have been easy living with him. Having no children must have also made her loneliness worse.
Thermal energy transfers by typically moving from a warmer material to a colder material so when the student poured colder water the energy transferred THROUGH the air.
