Which form of energy exhibits wavelike behavior as it travels through space?

• A. Quantum
• B. Electromagnetic radiation
• C. Frequency
• D. Avogadro's number

Answer: (B)

Electromagnetic radiation exhibits wavelike behavior as it moves through space. It consists of oscillating electric and magnetic fields that propagate together, and it can travel in a vacuum without needing a medium. This wave nature is why EM radiation shows phenomena like interference and diffraction, and it’s described by wavelength and frequency, linked by the speed of light through c = fλ. Other options don’t describe a form of energy that travels as a wave in space: frequency is a property of a wave, Avogadro’s number is a counting constant, and “quantum” refers to the discrete nature of energy transfer rather than a wave form.