Thermal cycles refer to the repeated process of heating and cooling materials or systems. This cycle can cause changes in physical properties, such as expansion and contraction, which can affect the performance and durability of materials. Thermal cycles are commonly observed in various applications, including engines, electronics, and construction materials. In nature, thermal cycles occur in environments like seasonal changes where temperatures fluctuate. These cycles can influence ecosystems, affecting plant growth and animal behavior. Understanding thermal cycles is essential for engineers and scientists to design systems that can withstand temperature variations without failing.