Which of the following is fundamentally different from the others?
A) light waves
B) gamma rays
C) X-rays
D) radio waves
E) sound waves

Question

Quizplus · Accepted Answer

Sound waves are fundamentally different from the others because they are mechanical waves that require a medium (such as air, water, or solids) to travel through, whereas light waves, gamma rays, X-rays, and radio waves are all electromagnetic waves that can travel through a vacuum.

Which of the Following Is Fundamentally Different from the Others