Lava Lamp Science

I found this activity at Growing a Jeweled Rose. It was so easy to put together and only requires three ingredients, one being water. All the supplies can be found at The Dollar Tree. Both my boys (ages 3, 1) really enjoyed making these lava lamps. They helped me add the oil and water and my one was so excited about the "bubbles". We made these as a part of our Letter L Activities this week.

  • Clear Container (I found hard plastic cups at The Dollar Tree)
  • Water
  • Baby Oil (Dollar Tree)
  • Alka Seltzer Tablets (look for the off brand at the Dollar Tree)
  • Optional: Food Coloring


1) Fill your container 3/4 full of baby oil. Fill the remaining 1/4 with water. Make sure to leave a little space at the top of the cup, so the reaction doesn't bubble over. 

2) Add multiple drops of food coloring of choice. Wait a minute for the food coloring to settle to the bottom of the cup. 

3) Add broken Alka Seltezer tablets to the lava lamp and immediately the lava lamp will start to bubble! 

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