Today, we worked together in small groups and made lava lamps. Everyone was mesmerized by this project.
Here is how it goes:
Materials needed:
- Water
- A clear plastic bottle
- Vegetable oil
- Food coloring
- Alka-Seltzer (or other tablets that fizz).
Instructions
- Pour water into the plastic bottle until it is around one quarter full.
- Pour in vegetable oil until the bottle is nearly full.
- Wait until the oil and water have separated.
- Add around a dozen drops of food coloring to the bottle (choose any color you like).
- Watch as the food coloring falls through the oil and mixes with the water.
- Cut an Alka-Seltzer tablet into smaller pieces (e.g., 3-4) and drop one of them into the bottle. Observe what happens.
- When the bubbling stops, add another piece of Alka-Seltzer.
This simple science experiment is a great way to practice making comments or to have a conversation. Here is an idea how to get the conversation going with the help of a little worksheet:
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