Materials Required:
l Tall jar
l Water
l Blue food colouring
l Cooking oil
Procedure:
- Save one of the tall jars that olives or cucumber pickle come in. Fill it halfway with water, then add a drop of blue food colouring.
- Fill the rest of the jar, right up to the top, with cooking oil, being sure not to leave any air space at the top. Screw the cap on tightly.
- Hold the jar sideways and gently rock it back and forth. The blue water inside the jar churns like rolling ocean waves. Now shake the jar vigorously and you’ll have a stormy sea!
This Is What Happens:
Water and oil do not mix together. Each remains separate, and since water is heavier, it stays on the bottom of the jar. When you rock the jar, the coloured water moves against the surface of the oil. When you shake the jar vigorously, foamy bubbles form that look like the stormy sea, but the water and oil are still not mixed. Let the jar sit for a few minutes and you will see two separate layers again.
