Young's Modulus
Properties of Matter

Soft frogs

Stories from Physics for 11-14 14-16 IOP RESOURCES

 The tongues of frogs and toads are finely evolved to capture prey. A cane toad’s tongue can stretch by 180% during unravelling which helps the toad to pull it back as it recoils. Compared to the human tongue, which has a bulk Young’s modulus of around 300 kPa, frogs’ tongues are much softer — the tongue of the northern leopard frog has a Young’s modulus of only 4.2 kPa, so is over 70 times softer than a human tongue.

 

 

 

References

Young's Modulus
appears in the relation E=σ/ε
can be represented by Stress-Strain Graphs

Disable node explorer

Off
Limit Less Campaign

Support our manifesto for change

The IOP wants to support young people to fulfil their potential by doing physics. Please sign the manifesto today so that we can show our politicians there is widespread support for improving equity and inclusion across the education sector.

Sign today