If you’ve tried my Homemade Lava Lamps, then this activity will seem very familiar, but with a snowy twist, perfect for winter!
Here’s what you need to get started:
- Empty water bottle (or any clear bottle)
- baby oil
- White paint
- Alka Seltzer tablets
- Glitter (optional, but why not?)
Add some white paint to some water so that it becomes cloudy. Mix well. Fill the bottle a little more than halfway with baby oil.
Add white water to it until it’s about 2-3 inches from the top of the bottle. Observe the layers.
Add some glitter if you want.
Break one of the Alka Seltzer tablets into 4-5 pieces. Use caution with young children who might be tempted to put this in their mouths! It is a cold medication and should not be ingested by children!
Add one piece to the bottle and watch the magic begin!
Once the Alka Seltzer tablet has completely dissolved, add another one and watch the colored bubbles rise and sink again! Repeat as many times as you’d like! You can even try adding some glitter for some extra fun!
This is a twist to my Homemade Lava Lamp activity which is definitely a favorite with my tots and my own kids!
Note: Different “flavors” of Alka Seltzer might create a colored “Blizzard”. I accidentally used the orange flavored ones and our blizzard turned orange/peach! The tots still loved it though!
Here are some more fun winter weather related science activities:
The Science behind the Activity:
Water and oil are insoluble, they do not mix. Water is denser than oil and stays as a separate layer at the bottom of the bottle. Food coloring is soluble in water so it colors the water but not the oil. When the Alka Seltzer is added, it forms gas bubbles that rise to the top, “dragging” the colored water along with it. As the water reaches the top and the gas bubbles pop near the surface of the oil, the denser water falls back down through the oil. The process keeps repeating itself until the Alka Seltzer has completely dissolved an no longer forms any bubbles.
This activity can be done with adding salt instead of Alka Seltzer (for those of you who are concerned about using medication with kids) but the results are not as good and eventually the salt saturates the water and makes it cloudy. Let me know if you try it with some other fizzy tablets such as Airborne. Curious to see if those work just as well.