elastic
Definition
Elastic is a property of materials that allows them to return to their original shape after being stretched or compressed. This is because the molecules in elastic materials are connected by weak bonds that allow them to slide past each other. When the material is stretched, the molecules are pulled apart. But when the material is released, the molecules spring back to their original position.
The amount of elasticity in a material is measured by its elastic modulus. The elastic modulus is a measure of how much force is required to stretch or compress a material. Materials with a high elastic modulus are more elastic than materials with a low elastic modulus.
Elastic materials are used in many different applications. For example, rubber bands are elastic, so they can be used to hold things together. Springs are also elastic, so they can be used to absorb shocks.
How can the word be used?
In the context of materials science, elastic can be used to describe a material that can stretch and return to its original shape.
Different forms of the word
Noun: elastic, elastic band, rubber band, bungee cord.
Adjective: elastic, elasticized, stretchy, rubbery.
Verb: to elasticize, stretch, make elastic.
Synonym: resilient, flexible, pliable.
Antonym: rigid, inflexible, stiff.
Etymology
The word "elastic" comes from the Latin word elasticus, which means "rebounding" or "springing back". It is made up of the two Latin words e (out) and lasticus (to spring back).
Question
What materials would you describe as being elastic?
AQA Science Exam Question and Answer
Question:
Explain the concept of elasticity and its significance in the field of materials science. Describe the properties and behaviour of elastic materials when subjected to deformation and stress. Provide examples of everyday objects made from elastic materials and the advantages of using such materials in various applications.
Answer:
Elasticity is the property of a material that allows it to return to its original shape and size after being subjected to deformation or stress. When a material is stretched or compressed within its elastic limit, it stores potential energy, which is released when the force is removed, causing the material to spring back to its initial form.
Elastic materials are crucial in materials science as they play a vital role in various applications. Rubber bands, bungee cords, and springs are examples of everyday objects made from elastic materials. Their ability to absorb and release energy makes them ideal for creating efficient shock absorbers, protective gear, and other devices requiring deformation without permanent damage.
Understanding elasticity is essential in designing materials that can withstand stress and strain, improving product durability and safety. In modern engineering, elasticity is a fundamental property that allows for the development of innovative materials and designs that enhance the functionality and reliability of everyday objects and critical systems.