WHY DOES A THICK GLASS TUMBLER BREAKS WHEN WE PUT HOT WATERT OR TEA IN IT?

A thick glass tumbler can break when hot water or tea is poured into it due to thermal stress. When the hot liquid contacts the cooler glass, the surface of the glass heats up and expands more quickly than the interior, leading to uneven expansion. This disparity creates stress that can cause the glass to crack or shatter. Additionally, flaws or imperfections in the glass can further weaken it, making it more susceptible to breaking under these conditions.