Definition: A dark image projected onto a surface where light (or other radiation) is blocked by the shade of an object.

Alright class, settle down and let’s take a look, At a word that often seems quite spooky, book! “Shadows,” you see, it's more than just a gloom, It’s a trick of light, a fascinating room. The dictionary gives us a helpful clue, "A dark image projected, for me and you!" Think about this – when the sun shines bright, An object blocks its rays with all its might. Like a tree standing tall against the blue, It casts a shadow, just waiting for you! Light travels in straight lines, that’s plain to see, But when it hits something, differently! The space behind an object, dark and deep, That's where the shadow secrets softly sleep. So shadows aren't scary, don’t you fret or sigh, They're just light playing tricks beneath your eye! Does that make sense to you, my clever crew? Do you understand what shadows do?