What energy can you see, and it travels in straight lines called rays?

• A. Light Energy
• B. Sound Energy
• C. Heat/Thermal Energy
• D. Electrical Energy

Answer: (A)

Light energy is the energy you can see, and in a uniform medium it travels in straight-line paths called rays. This straight-line behavior comes from photons moving directly until they encounter surfaces that reflect or bend them, which is why we describe light with rays. You see light because your eyes detect those photons. Other energies—sound travels as vibrations in a medium, heat is thermal energy you feel as warmth, and electrical energy involves moving charges—are not visible as light rays. So light energy matches the description perfectly.