![Noaa: Measuring the Depth of Water [Pdf] Activity](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Noaa: Measuring the Depth of Water [Pdf] Activity")
![Noaa: Measuring the Depth of Water [Pdf] Activity](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/original/FPO-knovation.png "Noaa: Measuring the Depth of Water [Pdf] Activity")
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Discover how people used simple tools to map the bottoms of bodies of water before the invention of sonar equipment. Then create a sounding box to measure depths that you cannot see.
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- Knovation Readability Score: 5 (1 low difficulty, 5 high difficulty)