Thermal Energy
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Thermal energy is stored in hot things. When an object's temperature increases, its molecules move faster, resulting in higher thermal energy.
Things that are hot include fire, the sun, lava, and certain foods like chili peppers.
One example of an item you can put in a freezer that stays hot is a heat pack, also known as a hot pack or hot water bottle. These packs are designed to retain heat and can be stored in the freezer to be used as a cold compress when needed.
Energy is stored in living things in the form of ATP (adenosine triphosphate), which is produced during cellular respiration. ATP is a molecule that carries energy within cells and releases it when needed for various cellular activities.
Indirect hot water refers to a system where hot water is produced by a separate device, such as a boiler or water heater, and then circulated through a heat exchanger in a tank to heat the water stored there. This method of heating water is often more efficient and can provide a continuous supply of hot water.
of the Second Law of Thermodynamics, which states that heat naturally flows from hot objects to cold objects until thermal equilibrium is reached. This means that hot things cool down as they transfer heat to their surroundings, while cold things warm up as they absorb heat from their surroundings.