Sonar

Summary: This is called sonar. A transmitter under the ship sends out a beam of ultrasound. This travels through the water and reflects off the seabed. A receiver detects the reflection. It uses the time taken to work out the depth of the water. Tags: science student-book-7 physics Created: 2026-05-21 Last Updated: 2026-05-21

Sonar

This is called sonar. A transmitter under the ship sends out a beam of ultrasound. This travels through the water and reflects off the seabed. A receiver detects the reflection. It uses the time taken to work out the depth of the water.

Source

This concept is from the [Science Student Book 7](Science Student Book 7/Physics/Sound/2.5 Echoes and ultrasound.md), Physics section.