Echo Sounding (OCR GCSE Physics A (Gateway Science Suite)): Flashcards
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What is echo sounding?
What is echo sounding?
A technique to measure water depth and locate underwater objects
Who uses echo sounding?
Who uses echo sounding?
Boats and submarines
What type of waves are used in echo sounding?
What type of waves are used in echo sounding?
Ultrasound waves
What are ultrasound waves?
What are ultrasound waves?
High-frequency sound waves
What property of ultrasound enables echo sounding?
What property of ultrasound enables echo sounding?
They reflect off surfaces
What surfaces reflect ultrasound in echo sounding?
What surfaces reflect ultrasound in echo sounding?
Sea bed and underwater objects
How is distance measured in echo sounding?
How is distance measured in echo sounding?
Time taken for ultrasound to reflect and return
What does the reflection time tell us in echo sounding?
What does the reflection time tell us in echo sounding?
Distance between the vessel and sea bed or object