1 / 9

Aqua

Aqua. aqua definition aqua noun pl. water; esp., in pharmacy, a solution of a substance in water. Cartographer. car·tog·ra·pher noun a person whose work is making maps or charts. Celestial Navigation.

sabine
Télécharger la présentation

Aqua

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Aqua aqua definition aqua noun pl. water; esp., in pharmacy, a solution of a substance in water

  2. Cartographer • car·tog·ra·pher • noun • a person whose work is making maps or charts

  3. Celestial Navigation • navigation based on observation of the sun, moon, stars, or planets to determine position

  4. Challenger Expedition • The Challenger expedition of 1872–76 was a scientific exercise that made many discoveries to lay the foundation of oceanography. The expedition was named after the mother vessel, HMS Challenger.

  5. Chronometer • A marine chronometer is a timekeeper precise enough to be used as a portable time standard; it can therefore be used to determine longitude by means of celestial navigation.

  6. Christopher Columbus • navigator, colonizer, and explorer whose voyages across the Atlantic Ocean led to general European awareness of the American continents in the Western Hemisphere. • Christopher Columbus performed oceanographic studies on his voyages.

  7. Charles Darwin • Darwin collected and studied numerous marine organisms during this famous voyage, which eventually lead to his famous subsidence theory of coral reef formation (for atolls), and a classification of barnacles that is still useful today. Observations he made on the Beagle expedition also provided him with the ideas that he later used to formulate his theory of evolution and natural selection.

  8. Echo Sounder • Echo sounding is the technique of using sound pulses directed from the surface or from a submarine vertically down to measure the distance to the bottom by means of sound waves. • Distance is measured by multiplying half the time from the signal's outgoing pulse to its return by the speed of sound in the water, which is approximately 1.5 kilometres per second. Echo sounding is effectively a special purpose application of sonar used to locate the bottom.

More Related