Nature Example
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Rock and Brick: The Earth’s Armour
Rocks are natural solids, while bricks are made by humans from clay, a special type of wet soil found in the ground.
Why they are suitable:
They are incredibly hard and do not change shape when you "squash" them. This makes them perfect for holding up the heavy weight of a roof.
💡 Fun Facts
- Some rocks, like slate, can be split into thin, flat sheets that are perfect for keeping rain off our roofs.
- Clay is very "squashy" and "twistable" when wet, but it turns into a rock-hard brick after being baked in a very hot oven called a kiln.
- Over millions of years, giant movements in the Earth can "bend" layers of solid rock into huge mountain ranges!