Fichas
Intro to Oceans
Fichas del conjunto (17)
- 1How many major oceans are there?5 Major oceans
- 2Where did the oceans come fromMostly volcanic and rock outgassing, but also comet impacts
- 3Why can't comets be a main source of Earths water?Comets have too much H^3 to be the total source of Earths water
- 4Where is the deepest part of the ocean?The Mariana trench
- 5When did oceans start forming?about 4.2-4.4 billion of years of go.
- 6What is the largest and deepest ocean?The Pacific Ocean
- 7What is the smallest ocean?The Arctic ocean
- 8What do scientists measure in the ocean?Temperature, samples of ocean water, sediments, marine organisms
- 9What does SONAR stand for?Sound Navigation And Ranging
- 10BathymetryThe measurement of ocean depths and charting the shape of the ocean floor
- 11What is SONAR, and how does it work?SONAR is used to meausre the depth by reflecting sounds from the ocean floor. We measure the time it takes for sound waves to travel from the transmitter to the floor to find the depth.
- 12What are continental margins?Shallow parts of the ocean floor made of continental crust and sediment.
- 13What is a passive continental margin?Passive continental margins are mostly found in coastal areas in the Atlantic Ocean, not associated with plate boundries, and have few earthques and volcanic activity.
- 14What is an active continental margin?Active margins are mostly in the Pacific ocean, accumulates a lot of sedement are have lots of volcanic/earthquakes.
- 15What is a deep ocean basin?A deep ocean basin is made of oceanic crust and a sediment later, is deeper part behond the continental margin.
- 16What are the three different types of sediments?Inorganic sediments, Biogenic sediments, seafloor sendiments.
- 17—
Información
- Descripción
- Intro to oceans- Earth Science
- Creado por
- Dorothy Lee
- Visitas
- 15
- Etiquetas
- Valoración