Mark is in charge of making change at his family’s garage sale on a hot summer day. He runs low on change and brings out a jar of pennies from the house. He keeps the lid off of the jar. Later in the day, he notices that the pennies are hot. Which statement best explains what happened?
a. Heat flowed from the surrounding hot air to the cooler air and transferred heat to the pennies by convection.
b. The pennies became hotter because light energy was transferred into thermal energy.
c. The air in the jar became cooler because heat flowed from the cooler air to the hot pennies by convection.
d. Heat flowed from the surrounding hot air to the cooler jar and transferred heat to the pennies by conduction.
