We Can See Each Other in the Classroom Right Now

question 43

Multiple Choice

We can see each other in the classroom right now because we

• A)emit thermal radiation.
• B)emit visible light.
• C)emit infrared light.
• D)reflect visible light.
• E)reflect infrared light.

---

Definitions:

X-rays

A form of electromagnetic radiation used in imaging and diagnostics to view inside the body.

Ionization

The process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons.

Molecules

The smallest units of a chemical substance that can exist independently while retaining the substance's chemical properties.

Component Parts

Individual pieces or elements that together make up a complex whole.