I followed the directions from this Science Bob experiment to create our own "lava" lamps. We started by pouring water into the bottom of the bottles. Then the girls added vegetable oil. Between each step, I asked the girls what they thought would happen. We talked about how the oil and water didn't mix.


Next, drops of food coloring. It was great to watch the food coloring sit in the oil and eventually go through into the water. Before adding the food coloring, I asked the girls what they thought would happen with the food coloring.

Then, we added a half tablet of Alka-Seltzer and watched what happened.



They thought it was soooo cool how the color blobbed up like a lava lamp. (Random sidenote: we had a garage sale last week so the last several weeks we have been going through old boxes in the basement. They found my old lava lamp from my dorm room at Knox and they loved watching it. So I hoped this experiment would be a hit.)
They were so interested so to keep things going, I asked the girls what they thought would happen if we shook the bottles up and the oil and water mixed. Then, we had to wait patiently to see what happened. I explained to them that sometimes when scientists conducted experiments, they had to wait a long time to see what happened. The scientists had to be very patient. :-)


So we watched as the oil and water separated again. We still have our lava lamp bottles and every new person that comes to the house gets treated to the bubble show. The girls even tried them in the dark with shining a flashlight through the bottom.












































