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Science Project: Lava Lamp

Ever wonder how a lava lamp works? All that light and slow motion liquid is so mesmerizing you may think it’s magic, but really, it’s science. And when you understand the science behind it it’s easy to make your own lava lamp!

Materials:

  • Clear bottle or jar (a liter soda bottle works well)
  • Food coloring
  • Water
  • Vegetable oil
  • Glitter
  • 1 Alka-Seltzer tablet
  • Flashlight

Procedure:

  1. Fill the jar ¾ of the way with oil
  2. Fill the rest of the jar with water.
  3. Add food coloring until you have your desired color.
  4. Add a sprinkle of glitter.
  5. Shine the flashlight so that it lights up the liquid in the jar. For extra effect, turn the surrounding lights off.
  6. Cut the Alka-Seltzer tablet into 8 parts and drop one by one into the jar.
  7. Watch as the color blobs climb up the jar and fall back down again, just like a lava lamp!

You must have noticed that when the oil and water were added to the jar they didn’t want to mix. That is because oil is less dense than water and so it rises to the top of a oil and water mixture. So here we have these layers of oil and water and then we drop a chunk of Alka-Seltzer tablet into the mixture. What happens?

Alka-Seltzer reacts with water to release Carbon Dioxide (CO2) gas, which is less dense than both oil and water. So up and up it goes through both layers of water and oil and when it reaches the surface the bubble pops and the bead of colored water falls back down. Groovy!

Though a store bought lava lamp works by heating up wax in and oil solution, this homemade Lave Lamp makes a great science project or a even just a fun experiment to do with friends.

Have Your Say

Why do you think the lava lamp is named after lava? Share your thoughts in the comment’s section below!

 

23 Comments

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Coolest Science Experiment?

  • Baking soda volcano.
  • Potato battery.
  • Homemade lava lamp.
  • Making your own mummy.

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RawrImacat
RawrImacat posted in Food:
Pizza, and I'm about to go eat some more tbh
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RawrImacat
^ That was something I wrote a while back in my Google Docs.
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RawrImacat
We made a vow, you and I. Before the altar, in front of the ones we love and respect, we declared our love. I was the happiest woman in the world.But you broke that vow. You betrayed my trust, despoiled our love. My husband and my brother. Together. I couldn't believe it. My pain had turned into a hate so bright it provided the only light in my darkness.And so here I am, digging a grave for you both in the soft soil. But I kept my promise - till death do us part.
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Leopup890
Roses are red Violets are blue Trump is the president Why aren't You? :3 (Seriously our country is in a bad state)
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Leopup890
These fun little poems don't  have to rhyme, but they can just be fun I.e.: date night, Holy crap 
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