<em>Reflection of light: When a ray of light falls on a smooth and polished surface, light returns back in the same medium. It is called reflection.</em>
<em>Shadow: Opaque objects do not allow light to pass through them and cast dark patches behind them. These dark patches are called </em><em>shadows</em><em>.</em>
Alliteration is when words begin with the same sound or the same cluster of sounds in succession. Knowing this definition, you can look on the page and easily find what the example is.