Hooked on Science: hard boiled earth

Hard-Boiled Earth

INGREDIENTS

• Hard-Boiled Egg

INSTRUCTIONS
STEP 1:  Peel the shell off the hard-boiled egg. Which layer of the Earth does this part of the hard-boiled egg represent? How does the hydrosphere and biosphere interact with this layer of the Earth?
STEP 2:  The next part of the hard-boiled egg is the white part. Which layer of the Earth does this part of the hard-boiled egg represent?     
STEP 3:  The last of the hard-boiled egg is the yellow part. Which layer of the Earth does this part of the hard-boiled egg represent?

EXPLANATION
The layers, which make up the hard-boiled egg are comparable to the layers, which make up the Earth. The shell represents the crust. The hydrosphere and the biosphere interact with this layer. Flowing water in the hydrosphere weathers rocks into small pieces, which are eroded and deposited to different locations on Earth. Plants in the biosphere grow in these pieces, known as soil. The white layer of the hard-boiled egg represents the mantle. The yellow part of the hard-boiled egg represents the core. Go to www.hookedonscience.org for more experiments that might get you and your family “Hooked on Science.”