Here's why:
* Elasticity: Elastic materials are designed to deform under stress and then return to their original shape when the stress is removed. Think of a rubber band – you can stretch it quite a bit, and it will spring back to its normal size.
* Yield Strength: This is the point where the material starts to deform permanently. Elastic materials have a high yield strength, meaning they can stretch a lot before they permanently change shape.
* Ultimate Tensile Strength: This is the maximum stress a material can withstand before it breaks. For elastic materials, the ultimate tensile strength is typically much higher than the yield strength. This means they can stretch a lot before they break.
In short, elastic materials are designed to bend and flex much more easily than they break. This is what makes them so useful in applications where flexibility and resilience are important, such as rubber bands, springs, and even some types of clothing.
