Which of these waves cannot travel through a vacuum?
A
Sound waves
B
Radio waves
C
X-rays
D
Light waves
Correct Answer: Option A — Sound waves
Explanation:
Sound waves cannot travel through a vacuum because they are mechanical waves that require a medium, such as air, water, or solids, to propag...
Sound waves cannot travel through a vacuum because they are mechanical waves that require a medium, such as air, water, or solids, to propagate through the vibration of particles. This is why astronauts cannot hear sound directly in space.