As part of our ongoing investigation into the Science behind our teeth, we soaked eggs in a variety of liquids for one week. Above, you can see the staining that came from soaking the egg in coffee (left) and cotton-candy + water (right). The calcium in eggshells is similar to the calcium in our teeth. We noticed that the egg that was soaked in vinegar had no shell remaining. We determined that acidic solutions can weaken calcium. Then, we smashed the eggs to test the strength of their shells.
Mr. Murray also discussed another toothy animal during Science… we learned about shark teeth! Unlike humans, sharks continue to lose teeth their entire lives. When one tooth is lost, another one easily fills the gap. Humans only have our ‘baby teeth’ and ‘adult teeth’, so it is important we take care of them by brushing and flossing regularly!
