Why Is the Sky Blue? Light Scattering Experiment
Ages 6-1210-15 minutesEasy Difficulty
About This Activity
Explore the science behind why the sky looks blue using a simple experiment that demonstrates light scattering.
Materials Needed
- A clear glass of water
- A flashlight
- A few drops of milk
Safety Notes
- Adult supervision recommended
- Handle the glass with care to prevent breakage
- Clean up spills immediately to avoid mess
Instructions
- Fill the glass with clear water.
- Add a few drops of milk and stir gently.
- Shine the flashlight through the side of the glass and observe.
- Notice how the light appears bluish as it scatters in the liquid, similar to how sunlight scatters in the sky.
How It Works
Sunlight is made up of all colors of light, but blue light scatters the most when it interacts with small particles in the atmosphere. In this experiment, the milk particles mimic air molecules, scattering the light and making it appear bluish.
Tips for Success
- Try different amounts of milk to see how the effect changes.
- Shine the flashlight from different angles for varied results.
- Use a dark room to better see the scattering effect.