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TWINKLE, TWINKLE, LITTLE STAR!

Find out why the stars in the sky are twinkling with this experiment

Suitable For

Grade 5

Difficulty

3

Time Required

 <2 Days

Supervision

Advised

What’s it about?

Have you ever wondered what causes the stars up in the sky to ‘twinkle’ when you look at them? In the following science experiment we will use water to refract light to help explain this occurrence:

Topics covered

Turbulent, Speed of light, Theory of Relativity, Albert Einstein, Celestial bodies, Refraction

What will I need?

  • GLASS BOWL WITH WATER
  • ALUMINIUM FOIL
  • FLASHLIGHT
  • BLACK PAINT
  • NAILS
  • MARBLES
  • BOOKS

Procedure (Method)

Unfortunately, this section is only available in the e-book version of the project.

How does it work?

Unfortunately, this section is only available in the e-book version of the project.

In this science experiment we drop marbles into the bowl to make the water ‘turbulent’ causing the light shining up through the holes in the foil cover (or stars) to ‘twinkle’. The rippling in the water bends and distorts the light as it travels through the water, reflected from the aluminium foil. Similarly, stars appear to ‘twinkle’ because the light waves travelling from very far away passes through various layers of air in the earth’s atmosphere. The layers of air have varying thicknesses and can also distort and refract the light before it reaches the earth.

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This particular science project can be found in any of the following Experiland e-books:

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