How can we understand the relative scale of Earth's layers?
This classroom lecture presents a simple conceptual model of the relative thicknesses of the Lithosphere by measuring a simple hard-boiled egg. The hard-boiled egg is used as a scale model for the zones of the Earth. The shell is to the egg as the lithosphere is to the Earth. This demonstration highlights the idea that the lithosphere is a thin shell.
Compare the relative thickness of the shell of an egg to the lithospheric "shell" of the Earth
- Measure the diameter of the egg, then measure the thickness of the egg shell
- Ratio of egg shell to egg radius is about 2%
- Ration of lithosphere to Earth radius is about 2%