Ocean in a Bottle
Materials:
- clean, clear plastic bottle with a cap
- water
- cooking oil, baby oil, or mineral oil
- blue food coloring
- decorations, such as beads, shells, glitter, plastic fish, or coins (optional)
- electrical tape (optional)
Directions:
- Remove the label from the bottle.
- Fill the bottle halfway with water.
- Put 3-4 drops of blue food coloring in the water.
- Put the cap on and shake the bottle to mix the food coloring into the water.
- Take the cap off. Add shells, fish or other decorations if you wish.
- Fill the bottle almost to the top with oil. Leave a little space at the top.
- Put the cap on. If desired, wrap the lid with electrical tape to prevent it from opening.
- Rock the bottle slowly from left to right.
- It looks like waves in an ocean!
Source:
adapted from www.theideabox.com and www.nasa.gov , 2008.