Sound travels as a wave, but unlike light, it requires a physical medium — air, water, or solids — to propagate. In the vacuum of outer space, no sound can travel at all. This is why, despite the vivid explosions in many science-fiction films, a real spacecraft detonating in space would be eerily silent.
Which choice best states the main idea of the text?
- A
Light travels faster than sound.
- B
Solids carry sound better than gases.
- Ccheck_circle
Sound, unlike light, cannot travel through a vacuum.
- D
Science-fiction films are scientifically inaccurate.
Explanation
The passage's central point is that sound needs a medium and so cannot travel through vacuum — A. B is an example; C and D are not stated.