How are shadows formed? What are the two types of shadows based on the source of light? Do all objects cast shadows? [5 MARKS]
How are shadows formed? What are the two types of shadows based on the source of light? Do all objects cast shadows? [5 MARKS]
Shadow Formation: 2 Marks
Types of shadows: 2 Marks
Types of Objects: 1 Mark
A shadow is just a space or region where there is no light since an opaque object is blocking light rays. The position and intensity of the source of light affects the properties of the type of shadow that is formed.
Light sources can be either point or non-point (extended) in nature. If it is a point source of light, then it forms a simple shadow called an umbra. If it is an extended light source, the shadow is divided into the umbra, penumbra, and antumbra. They can also be used to define levels of darkness, as is sometimes done when dealing with sunspots.
No, only opaque objects can cast a shadow.
Shadow Formation: 2 Marks
Types of shadows: 2 Marks
Types of Objects: 1 Mark
A shadow is just a space or region where there is no light since an opaque object is blocking light rays. The position and intensity of the source of light affects the properties of the type of shadow that is formed.
Light sources can be either point or non-point (extended) in nature. If it is a point source of light, then it forms a simple shadow called an umbra. If it is an extended light source, the shadow is divided into the umbra, penumbra, and antumbra. They can also be used to define levels of darkness, as is sometimes done when dealing with sunspots.
No, only opaque objects can cast a shadow.
