The First Scientific Expedition to Use an Echo Sounder Was

question 3

Multiple Choice

The first scientific expedition to use an echo sounder was:

• A) the Challenger expedition.
• B) the Meteor expedition.
• C) the United States Exploring expedition.
• D) the voyage of Trieste.

---

Definitions:

Electronic Transitions

Describes the movement of electrons between energy levels within an atom or molecule, commonly observed in spectroscopy.

Absorption

The process by which one substance is taken up by another, either through permeation or chemical reaction.

λmax

The wavelength at which a substance exhibits maximum absorbance, often used in spectroscopy to characterize compounds.

UV Spectrum

The part of the electromagnetic spectrum that encompasses ultraviolet light, used in studying molecular structures and chemical properties.