Thermal energy is the energy that comes from the temperature of matter. It is the total kinetic energy of the particles in an object, which means it depends on how fast those particles are moving. The faster the particles move, the more thermal energy the object has. This energy can be transferred between objects, often in the form of heat.
When thermal energy is transferred from one object to another, it can cause changes in temperature. For example, when you touch a hot stove, thermal energy moves from the stove to your hand, making it feel warm. This transfer of thermal energy is essential in many processes, including cooking and heating systems.