Science

Here are 2 more under the sea science experiments.

The Science Behind the Experiment – A Guide for Adults

Although this experiment is not completely scientifically accurate, as in reality the oxygen dissolves though the gills and into the fish’s bloodstream, it does show the children that the gills take something out of the water.

The Science Behind the Experiment – A Guide for Adults

Objects float better in salt water than in fresh water because salt adds mass to water and makes it denser.  If you add 10g of salt to 100g of water, the total mass is now 110g.  This increase in density causes objects to float better on the surface. The denser the water, the easier it is for objects to float on top.