Isaac wants to make s'mores. He holds a marshmallow on a metal skewer over a fire. A few seconds later, the marshmallow is cooked and the skewer feels warm. What most likely happened?

Answer: Thermal energy is acting in this case by turning into the heat and effecting marshmallow and skewer

Explanation:

According to the mentioned case in question, for making s'mores, Issac is holding the skewer containing marshmallows over the fire for cooking. As fire is acting as the source of thermal energy, it will impact the marshmallow and skewer through heat.

Marshmallow will get cooked through the heat and skewer will become warm because it is held above the fire source. Thus, skewer an marshmallow are most likely to get heated up due to thermal energy.

Thermal energy in the form of heat moved from the fire to the skewer and marshmallow.