Question

which wave requires a medium to travel through?
○ microwave
○ sound wave
○ electromagnetic wave
○ light wave

Explanation:

• Microwaves, electromagnetic waves (which include light waves), and light waves are all electromagnetic waves. Electromagnetic waves can travel through a vacuum (no medium) because they consist of oscillating electric and magnetic fields that can propagate without a material medium.
• Sound waves are mechanical waves. Mechanical waves require a medium (like air, water, or solids) to transfer energy because they involve the vibration of particles in the medium.

Answer:

B. sound wave