how to make a lava lamp

How to Make a Lava Lamp

I had a lava lamp growing up as a kid. It was the coolest thing and I literally could have sat and watched it for hours. So, when I ran across an experiment for making your own lava lamp at home using a few basic materials, I knew the boys would love it. This fun experiment will have the kids intrigued and is even fun for adults too. It is quick, simple and most of all, a blast!


  • Empty plastic bottle with lid
  • Water
  • Vegetable oil
  • Food coloring
  • Alka Seltzer tablets

Step 1:

Fill your empty plastic bottle about 2/3 of the way full with vegetable oil.

Step 2:

Fill the remaining 1/3 of the bottle up with water, but leave a little space at the top for the air to escape when the tablets are added later.

Step 3:

Place several drops of food coloring into the bottle. We used about 10-12.

Step 4:

Cut an Alka Seltzer tablet into several small pieces as shown. If you try to drop the whole thing in at once, it will bubble over and you will have a mess on your hands.

Step 5:

Drop a small piece of the Alka Seltzer tablet into the bottle and watch the lava lamp action take place. The food coloring bubbles should start rising to the top just like in a real lava lamp. Do not leave the lid on when adding the tablets. Once it is done fizzing, you can add the lid back for safe storage.

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