Thunderstorm

• Clear plastic container, about the size of a shoe box
• Red food color
• Ice cubes made with blue food color

• Fill the plastic container about 2/3 full with lukewarm water and let the water sit for 1 minute.
• Place a blue ice cube in the water at one end of the plastic container.
• Add 3 drops of red food color to the water at the other end of the plastic container.

What happened? How does this relate to a thunderstorm?