Amazing Egg Experiments | Part 2
Last week we explored the strength of egg shells with two experiments. We learned that the arch shape of the egg shell is so well designed it was able to walked upon! The other experiment showed us that while the egg shell is very strong, certain acids, like vinegar, are strong enough to eat through it. We dissolved the egg shells, leaving the yolk and egg white encompassed in the flexible, soft outer membrane. Pretty amazing!
For our next experiment, we’re using eggs to explore density. Upon our recent trip to the ocean, my son Ryan noticed rather quickly that the water was super salty. If you’ve ever swam in the ocean, you’ll notice that you float rather easily because saltwater is denser than fresh water.
Egg Experiment 3: Eggs and Density
(In case you missed experiments one and two, you can read them here.)
For this experiment you’ll need three tall glasses or containers (we used shaker cups), salt… lots and lots of salt, 3 eggs and fresh water. The first container we filled with fresh water almost all the way to the top. The second contain we filled with fresh water then added approximately 1/2 cup salt and mixed well. The third container we filled 1/2 way up with water and added about 1/4 cup of salt and mixed well.
Next, we gently placed our eggs into the containers. We noticed that the eggs in saltwater we floating towards the top while the egg in fresh water had sunk to the bottom.
We also tried a really cool trick by slowly poring fresh water on top of the 1/2 glass of salt water. It resulted with the egg being suspended in the middle of the mixture… heavier than fresh water but light than saltwater.