How does heat affect elasticity?

Heat affects elasticity by increasing the energy of the material's molecules, which can make them more flexible and allow for greater deformation without breaking. As temperature rises, materials often exhibit reduced stiffness and increased ductility, leading to a decrease in their elastic modulus. However, excessive heat can also cause permanent deformation or damage, as the material may exceed its elastic limit. Ultimately, the relationship between heat and elasticity varies depending on the specific material and its properties.