One hot day Rose went to the park and she took a cup of water. She decided to go to the coffee shop that is across from where she is at, to meet a friend.
Rose left to the coffee shop and she forgot her cup on the bench she was sitting at.
Hours later Rose went back to the bench cause she remembered that she forgot something. She saw the cup of water that she had brought was less full than she had left it. The cup of water had gained heat energy from the outdoor heat and it made the water evaporate.