Elasticity and Materials
Materials respond to stress differently, being stiff, brittle, ductile or elastic depending on their structure.
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Play with the controls to see the idea in action.
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Materials respond to stress differently, being stiff, brittle, ductile or elastic depending on their structure.
- Elastic materials return to shape
- Brittle materials snap
- Ductile materials can be drawn into wires
🧠 Quick quiz
Three questions. Score 2 or more to complete the topic.
What is Elasticity and Materials?
Within Physics, which covers forces, energy, waves, electricity, magnetism, light and space explained through motion and experiments, this topic explains Elasticity and Materials. Physics topics explain how things move, push, heat up and carry energy, so each one here pairs a definition with a live model you can change.
Check that you can explain Elasticity and Materials in your own words and give one example from everyday life. If you can do that, you have understood the core idea.
Understanding Elasticity and Materials explains how the physical world behaves, from sport and transport to electricity and medicine.
Elasticity and Materials in detail
Materials respond differently to forces. Stress is force per unit area and strain is extension per unit original length, and the Young modulus is stress ÷ strain, a measure of stiffness. Elastic deformation is reversible, whereas plastic deformation is permanent.
A stress-strain graph shows the limit of proportionality, the elastic limit, yield point and breaking point. Ductile materials, like copper, can be drawn into wires; brittle materials, like glass, break with little deformation; and polymers like rubber have unusual curves. Engineers choose materials according to strength, stiffness and toughness.
How the interactive helps you understand Elasticity and Materials
Watch the force arrows in the interactive. Use any sliders or buttons it offers to change the values and see how the force arrows responds.
Before you change anything, predict the result. Then change one value at a time and check whether your prediction was right. This is a quick way to build a correct mental model of Elasticity and Materials.
Real-life uses and examples
- Use Elasticity and Materials to make sense of a practical and its results.
- Answer “explain” questions by linking Elasticity and Materials to a clear cause and effect.
- Predict what a ball, car or circuit will do with Elasticity and Materials before you do the calculation.
Common mistakes to avoid
- Mixing up Elasticity and Materials with a related quantity that has different units.
- Forgetting that some quantities, such as force or velocity, also have a direction.
- Learning the definition without testing it. Use the quiz and the interactive to check that you can apply the idea.
Frequently asked questions about Elasticity and Materials
What is Elasticity and Materials?
Materials respond to stress differently, being stiff, brittle, ductile or elastic depending on their structure.
What are the most important points about Elasticity and Materials?
The main points are: Elastic materials return to shape; Brittle materials snap; Ductile materials can be drawn into wires.
Why is Elasticity and Materials useful?
Understanding Elasticity and Materials explains how the physical world behaves, from sport and transport to electricity and medicine.
How can I practise Elasticity and Materials?
Open the interactive at the top of this page and change the controls one at a time. Predict the result before each change, then take the three-question quiz. A score of two or more marks the topic as complete on this device.
Which topics are related to Elasticity and Materials?
Related topics in Physics include Electronics and Logic Gates, Satellites and Communication, Scientific Investigation Skills.