This liquid layers activity proves that all liquids aren't the same. We all know that rocks are heavier than feathers. But which is lighter -- water or oil? Kids can see which liquid is the heavyweight champion in this easy activity.
What You'll Need:
- Large clear jar with a tight-fitting lid
- Food coloring
- Vegetable oil
How to Make Liquid Layers:
Put some water in your jar and color it with food coloring. Now slowly pour in some vegetable oil. Put the lid on the jar and shake it. Let the liquids settle.
What happens? The word "density" refers to how closely packed the molecules are. The higher the density, the heavier it is.
Which liquid has the highest density? Frozen water is less dense than its liquid form. That is why ice floats on top of water! The density of our bodies is very close to that of water -- or else we wouldn't be able to float in a swimming pool.
Slow the melting process in the next easy water activity.