We made Lava Lamps today. They super easy and the kids love them!
You need a bottle, vegetable oil (or baby oil if you want clear oil instead of a yellowish color), water, food coloring and Alka Seltzer tablets.
Since we were doing 4 bottles we did 2 where we first put the water in and colored it. Then we put the oil in. Then the other 2 we put the oil in first, then the water, then the food coloring. You want it to be about 2/3 oil and 1/3 water. Leave 1/2-1 inch space at the top.
When we did the oil first, then water and food coloring it took a few minutes for the food coloring to get to the water and mix with it. The boys enjoyed watching it, well JJ sort of got impatient waiting. But he got pretty excited when it started to mix. The top left picture below is when it first started mixing with the water. The other pictures are bubbles that form when you drop in an Alka-Seltzer tablet. I read to break it either in half or quarter pieces. Then someone told me you can do it whole, but we found when you do it whole, it stays on the bottom for a little but then floats to the top. The smaller pieces stayed on the bottom making more bubbles for the kids to watch. The loved watching the bubbles coming up! When it stops and the tablet is dissolved you can put another piece in. You can close up your bottle and re-do it many, many times, until it gets cloudy.
|Top Left pic is the dye mixing with water. The others are bubbles from the Alka-Seltzer tablets.|
|JJ putting the dye in.|
|Mackenzie and Kolin got so excited to see the bubbles!|
|Tanner putting an Alka Seltzer tablet in.|
|Tanner putting the dye in and watching it mix with the water.|
|Kolin watching the bubbles.|