Exploring sounds around us, measurement and recording of this- how is it done?

Ahydrophone

Explanation:

Sound in water is measured using a hydrophone, which is the underwaterequivalent of a microphone. Ahydrophone measures pressure fluctuations, and these are usually converted to sound pressure level (SPL), which is a logarithmic measure of the mean square acousticpressure.

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1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.

answer is d hope this