Imagine holding a rainbow in your hands! 🌈 With just sugar, water, and food coloring, you can create a beautiful layered rainbow in a glass. This experiment is simple, colorful, and teaches you about density in liquids.

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What You’ll Need

• • 4 clear glasses or cups

• • Water

• • Sugar

• • Food coloring (red, yellow, green, blue)

• • Spoon

• • A tall clear glass

Step-by-Step Instructions

1. Prepare Colored Solutions

Fill each of the 4 glasses with the same amount of water. Add different food coloring to each glass.

2. Add Sugar in Layers

• • In the first glass (red), add 3 tablespoons of sugar.

• • In the second glass (yellow), add 2 tablespoons of sugar.

• • In the third glass (green), add 1 tablespoon of sugar.

• • In the fourth glass (blue), add no sugar.
    Stir well until the sugar dissolves completely.

3. Layer the Colors

Take a tall clear glass. Start by carefully pouring the red solution first, then slowly add the yellow, then green, and finally the blue.
👉 Tip: Pour gently over the back of a spoon to avoid mixing.

4. Watch the Rainbow Form

If done carefully, you’ll see all four colors sitting on top of each other like a rainbow. 🌈

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Why Does It Work?

• • Density means how heavy a liquid is compared to its volume.

• • The more sugar in the water, the denser it becomes.

• • By layering from densest (red) to least dense (blue), the liquids stack instead of mixing.

Fun Variations

• • Try more colors by adding different sugar levels.

• • Use honey, dish soap, or oil for extra density layers.

• • Shine a flashlight through the glass for a glowing rainbow effect.

Safety Note ⚠️

This experiment is completely safe, but not meant for drinking due to high sugar content.

Conclusion

The rainbow in a glass is not only a fun DIY project but also a cool way to explore density and liquid science. It’s perfect for kids, students, or anyone who loves colorful science experiments.

Try it today and make your own rainbow indoors! 🌈✨

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