3Turn-8

Outcomes

• Pupils can sketch the shape of Force verses Extension graphs for helical springs, and rubber bands.
• Pupils can identify and recall that the initial linear region of a force-extension graph is associated with Hooke's law.

Specification References

• 1.27 describe how extension varies with applied force for helical springs, metal wires and rubber bands
• 1.28 recall that the initial linear region of a force-extension graph is associated with Hooke's law
• 1.29 associate elastic behaviour with the ability of a material to recover its original shape after the forces causing deformation have been removed.

Starter

• What did I learn?
• What did I find easy?
• What did I find difficult?
• What do I want to know now?