A(n) ______ is a material that causes a wave to bounce off of it.

A(n) ______ is a material that causes a wave to bounce off of it.

• A. absorber
• B. reflector
• C. transmitter
• D. converter

Answer: (B)

When a wave encounters a surface and is sent back toward the source, the surface is acting as a reflector. A reflector is defined by its ability to bounce the wave back rather than absorbing it or letting it through. This reflected energy creates the characteristic return signal used in imaging and detection—for example, light bouncing off a mirror or sound returning to a sonar or radar sensor. An absorber, by contrast, soaks up energy and reduces reflection, turning more of the wave into heat. A transmitter emits waves rather than simply reflecting them, and a converter changes the energy into a different form or frequency.

When a wave encounters a surface and is sent back toward the source, the surface is acting as a reflector. A reflector is defined by its ability to bounce the wave back rather than absorbing it or letting it through. This reflected energy creates the characteristic return signal used in imaging and detection—for example, light bouncing off a mirror or sound returning to a sonar or radar sensor. An absorber, by contrast, soaks up energy and reduces reflection, turning more of the wave into heat. A transmitter emits waves rather than simply reflecting them, and a converter changes the energy into a different form or frequency.