Which statement describes absorption?

Which statement describes absorption?

• A. Energy can be absorbed by one layer reducing energy to deeper tissues.
• B. The energy wave is bent as it strikes an interface between two different tissue layer densities.
• C. Reflection is the change of energy form.
• D. Any energy that is not reflected or absorbed passes to the next layer.

Answer: (A)

Absorption is when tissue takes up some of the incident energy, often converting it to heat and reducing the amount of energy that continues to deeper tissues. The statement that energy can be absorbed by a superficial layer and thereby reduce energy reaching deeper tissues matches this idea directly. It shows energy being taken in by a layer rather than simply bending or bouncing away. By contrast, bending at an interface describes refraction, not absorption; energy is redirected but not necessarily taken up. Reflection involves redirecting energy rather than its form being absorbed, and transmission refers to energy that isn’t reflected or absorbed continuing to the next layer.

Absorption is when tissue takes up some of the incident energy, often converting it to heat and reducing the amount of energy that continues to deeper tissues. The statement that energy can be absorbed by a superficial layer and thereby reduce energy reaching deeper tissues matches this idea directly. It shows energy being taken in by a layer rather than simply bending or bouncing away.

By contrast, bending at an interface describes refraction, not absorption; energy is redirected but not necessarily taken up. Reflection involves redirecting energy rather than its form being absorbed, and transmission refers to energy that isn’t reflected or absorbed continuing to the next layer.