woetso jigdak invented an egg floating in salt water.
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The dependent variable in an experiment involving an egg floating in salt water would likely be the level of buoyancy, which can be measured by whether the egg floats or sinks in the solution.
Density of salt water.
An egg floating in salt water. The salt makes the water more dense. Since the egg is less dense it floats!
Floating is a physical process. Generally the density of egg is slightly more than that of pure water. When a salt is dissolved in water its density is increased defending on the concentration of the salt in the water. Since the density of salt solution is more egg floats in salt solution.
An egg will float better in salt water. The density of salt water is greater than regular water hence better floating by the egg.
If you put an egg in salt water for a week, the egg will begin to undergo osmosis. The salt concentration in the water will cause water to move out of the egg, resulting in the egg shrinking and becoming smaller in size. The egg's membrane may also become translucent or appear to be semi-transparent.
A fresh egg don't float in pure water; in a salty water the floating depends on the concentration of the salt in solution. The salty water is more dense.
There are no serious/significant risks involved in the experiment.
I would think water. What you would do, is take a glass of water, peel the egg, put salt in, then put the egg in, and I think that is it. I haven't tried it out, but I am pretty sure that's all to it.
Experiments comparing the densities of salt water and fresh water can demonstrate how salinity affects the buoyancy of objects. Salt water is denser than fresh water due to the dissolved salt, causing objects to float higher in salt water compared to fresh water of the same volume. This phenomenon is demonstrated in experiments such as the floating egg or sinking and floating objects in different types of water.