Washington Comprehensive Assessment of Science (WCAS) Practice Test 2025 – Your All-in-One Guide to Exam Success!

Question: 1 / 400

When light waves travel through a material, what is the term for this process?

Reflect

Absorb

Transmit

The process by which light waves travel through a material is known as transmission. When light transmits through a medium, it continues to move in a straight path, although its speed may change depending on the optical density of that material. This is a fundamental property of light and is crucial for understanding how various materials interact with light, such as in lenses and optical fibers.

In contrast, reflection involves light bouncing off a surface, absorption entails the material taking in the light energy, converting it to another form, and scattering refers to the light being redirected in multiple directions after striking particles within a medium. Each of these processes plays a significant role in different scenarios involving light, but when specifically discussing the passage of light through a substance, transmission is the accurate term.

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