* Light travels in straight lines: Light waves propagate in a straight line unless they encounter something that changes their direction.
* Objects block light: When an object is placed in the path of light, it blocks the light waves from passing through it.
* The area behind the object is dark: The area behind the object where the light waves were blocked will have no light reaching it, creating a shadow.
Factors affecting shadow formation:
* The size and shape of the object: Larger objects will cast larger shadows. The shape of the object will affect the shape of the shadow.
* The distance between the object and the light source: The closer the light source, the smaller the shadow. The farther away the light source, the larger the shadow.
* The type of light source: A point light source will create a sharp shadow, while a diffuse light source will create a softer, less defined shadow.
Let me know if you'd like me to elaborate on any of these points!
