Light and Shadows: A Study in Geometry 
Imagine walking home and you see some sort of dark shape following you from beneath? That’s a shadow, the only time they form is when the light can’t reach a surface behind it, like an opaque object blocking the light. This text will clearly outline the simple process of the sources of light, how shadows change shape and what a solar eclipse is.
The Sources of Light
For a shadow to appear, there must be a light source. Light sources can be natural, like the Sun and stars, or artificial, like lamps and candles. Shadows exist because something blocks the light, leaving a dark area behind it. The kind of light source changes how shadows look. A small, focused light makes a shadow with sharp edges, while a big, bright light makes a softer, blurrier shadow.
How Shadows Change Shape
The shape of a shadow depends on the light’s angle and distance. When the Sun is low in the sky at sunrise or sunset, your shadow looks long. When the Sun is high overhead, your shadow becomes short and close to you. If you move an object closer to a light source, its shadow gets much bigger, but if you move it farther away, the shadow gets smaller.
What Are Solar Eclipses?
A solar eclipse is a huge example of a shadow in space. It happens when the Moon moves between the Sun and Earth. The Moon blocks the Sun’s light and casts its shadow on Earth. The darkest part of this shadow is called the umbra, where you see a total eclipse. The lighter outer part is the penumbra, where you see a partial eclipse. Solar eclipses happen a few times each year, but it’s never safe to look directly at the Sun without special solar glasses or filters.
Conclusion
In summary we all know shadows. The process of a shadow forming always comes back to the same three essential things: the light source, the opaque object, and the surface. Next time you see a shadow you’ll know the basic information about it.
Thank you for your time!
By Aisha