Final answer:
When a sound wave moves from the air through a solid, it will increase in speed.
Step-by-step explanation:
When a sound wave moves from the air through a solid, it will increase in speed. This is because the speed of sound is generally faster in solids than in gases or liquids. In a solid, the particles are closer together, allowing the sound waves to propagate more quickly.
Learn more about Effect of sound waves passing through a solid