Practical Applications
## Making Waves in Tech
Sound waves aren't just for music—they're used in medical imaging, navigation, and entertainment.
### Cool Uses of Sound
- **Ultrasound:** Doctors use high-frequency sound waves to see inside the body.
- **Speakers and Microphones:** Convert electrical signals to sound and vice versa.
- **Sonar:** Submarines and ships use sound to detect objects underwater.
Understanding sound waves helps invent and improve amazing technology!
Examples
- Using an ultrasound machine to see a baby's heartbeat.
- Voice assistants like Alexa or Siri recognizing your commands.