Final answer:
The speed at which objects change temperature depends on their heat capacity. Objects with higher heat capacities change temperature slower than those with lower heat capacities.
Step-by-step explanation:
The temperature change of an object depends on its thermal energy and heat transfer. Objects do not change temperatures at the same speed because different objects have different heat capacities, which determines how much thermal energy they can absorb or release without a significant change in temperature.
Heat capacity is the amount of heat needed to raise the temperature of an object by 1 degree Celsius. Objects with a higher heat capacity, such as large objects or objects with high specific heat, will require more thermal energy to change their temperature compared to objects with lower heat capacities.
In other words, the speed at which an object changes temperature is influenced by its mass, composition, and specific heat. For example, a small metal coin will heat up or cool down faster than a large block of wood even if they are initially at the same temperature when subjected to the same heat source or cooling environment.