Marine Ecology, Ecosystems, Marine Factors, Seawater Chemistry
... the length of time its exposed. • This affects organisms living there because some are restricted to zones according to their adaptations to this type of zone (intertidal etc.). ...
... the length of time its exposed. • This affects organisms living there because some are restricted to zones according to their adaptations to this type of zone (intertidal etc.). ...
Chapter 17 Study Guide 16
... convection currents → heated material rises, cools, and sinks back down ____________________________________________________________________________________ 14) In the process of subduction which plate will always subduct? Why? ________________________________________________________________________ ...
... convection currents → heated material rises, cools, and sinks back down ____________________________________________________________________________________ 14) In the process of subduction which plate will always subduct? Why? ________________________________________________________________________ ...
Plate tectonics study guide blank File
... geologists of his time? 15. What do we call the longest chain of mountains in the world? 16. In the mid-1990’s what technology did scientists use to map the ocean floor? 17. In sea-floor spreading where on the ocean floor does molten material erupt onto the ocean floor? 18. What were scientists able ...
... geologists of his time? 15. What do we call the longest chain of mountains in the world? 16. In the mid-1990’s what technology did scientists use to map the ocean floor? 17. In sea-floor spreading where on the ocean floor does molten material erupt onto the ocean floor? 18. What were scientists able ...
4.1 & 4.2C Ocean Life PPt
... from above (nutrients, dead organisms) 5) Organisms may GLOW in the dark = BIOLUMINESCENCE 6) Small eyes or none at all, prehistoric-looking 7) Animal communities found on deep ocean floor = HYDROTHERMAL VENTS Cold water goes into cracks in the crust & gets ...
... from above (nutrients, dead organisms) 5) Organisms may GLOW in the dark = BIOLUMINESCENCE 6) Small eyes or none at all, prehistoric-looking 7) Animal communities found on deep ocean floor = HYDROTHERMAL VENTS Cold water goes into cracks in the crust & gets ...
plate tectonics
... WHAT TO DO: Go to this website and find the answers to the questions below. http://www.enchantedlearning.com/subjects/astronomy/planets/earth/Continent s.shtml QUESTIONS: ...
... WHAT TO DO: Go to this website and find the answers to the questions below. http://www.enchantedlearning.com/subjects/astronomy/planets/earth/Continent s.shtml QUESTIONS: ...
Study questions for Quiz 8 Plate Tectonics – more questions on
... What is the probable cause of the Earth’s internal convection? What is the source of the Earth’s internal heat generation? What name did Wegner give to the ‘original’ large land mass? What was the paleontological evidence for continental drift? What is the evidence from structure and rock type for c ...
... What is the probable cause of the Earth’s internal convection? What is the source of the Earth’s internal heat generation? What name did Wegner give to the ‘original’ large land mass? What was the paleontological evidence for continental drift? What is the evidence from structure and rock type for c ...
The Structure of the Earth and Plate Tectonics
... • The Earth’s crust is divided into _________major plates which are moved in various directions. • This plate motion causes them to _____________________________ • ________________ against each other. • Each type of interaction causes a characteristic set of Earth structures or “tectonic” features. ...
... • The Earth’s crust is divided into _________major plates which are moved in various directions. • This plate motion causes them to _____________________________ • ________________ against each other. • Each type of interaction causes a characteristic set of Earth structures or “tectonic” features. ...
Appalachian Mountain Building
... Most orogenic belts are associated with plate boundaries. The greatest variety and the tallest of these belts Are found at convergent Boundaries. ...
... Most orogenic belts are associated with plate boundaries. The greatest variety and the tallest of these belts Are found at convergent Boundaries. ...
Methods and Equipment Used by Marine Geologists
... In 1963, the National Science Foundation initiated a worldwide investigation of the seafloors called the Deep Sea Drilling Project (DSDP). Using technology developed by the petroleum industry, DSDP ships drilled and recovered extensive core sections, some over a mile long, from the ocean floor. In c ...
... In 1963, the National Science Foundation initiated a worldwide investigation of the seafloors called the Deep Sea Drilling Project (DSDP). Using technology developed by the petroleum industry, DSDP ships drilled and recovered extensive core sections, some over a mile long, from the ocean floor. In c ...
GEO115 - Ocean Bottom
... over a periods of several hundred million years. Each of these periods is called what? ...
... over a periods of several hundred million years. Each of these periods is called what? ...
Ch. 16 PowerPoint
... of the Samoa Hotspot Trail on the Pacific Plate. It is 2370 m in height with the top at -1585 m and the ocean bottom at -3955 m. It is very small with a volume of 356 km3. The seamount is moderately elongated in a southeast, northwest direction with an azimuth of approximately 115?. The edges of the ...
... of the Samoa Hotspot Trail on the Pacific Plate. It is 2370 m in height with the top at -1585 m and the ocean bottom at -3955 m. It is very small with a volume of 356 km3. The seamount is moderately elongated in a southeast, northwest direction with an azimuth of approximately 115?. The edges of the ...
Science Vocabulary Terms II
... Force that builds up the land (deposition, landslides, volcanic eruption, flood) Force that tears down the land (weathering, erosion, landslides, volcanic eruption, earthquakes, floods) Constructive process that describes the dropping off and building up of moved sediments and soil in a new location ...
... Force that builds up the land (deposition, landslides, volcanic eruption, flood) Force that tears down the land (weathering, erosion, landslides, volcanic eruption, earthquakes, floods) Constructive process that describes the dropping off and building up of moved sediments and soil in a new location ...
10.13 How Did These Ocean Features and Continental Margins Form?
... 5. Describe what the area might have looked like 20 million years ago based on the ages and relative motions of the plates. Draw a very simplified map of your interpretation on the worksheet. ...
... 5. Describe what the area might have looked like 20 million years ago based on the ages and relative motions of the plates. Draw a very simplified map of your interpretation on the worksheet. ...
Plate Tectonics PPT
... process • Denser ocean slab pulled underneith continent • As it is pulled under, the oceanic crust begins to melt. • When crust begins to melt, magma rises • Magma rises to surface and creates volcanoes ...
... process • Denser ocean slab pulled underneith continent • As it is pulled under, the oceanic crust begins to melt. • When crust begins to melt, magma rises • Magma rises to surface and creates volcanoes ...
Sea Floor Spreading – 1956-1963
... 1) What is the underlying cause of geosynclines and vertical tectonics? 2) The ocean floor began to be revealed – how to incorporate the new knowledge? - oceanic rocks predominantly basalt –different from continents? - can oceanic regions be transformed into continents and vice-versa? - seafloor mor ...
... 1) What is the underlying cause of geosynclines and vertical tectonics? 2) The ocean floor began to be revealed – how to incorporate the new knowledge? - oceanic rocks predominantly basalt –different from continents? - can oceanic regions be transformed into continents and vice-versa? - seafloor mor ...
Plate Tectonics - Galena Park ISD Moodle
... Oceanic lithosphere heats and dehydrates as it subsides The melt rises forming volcanism E.g. The Andes Mountain ...
... Oceanic lithosphere heats and dehydrates as it subsides The melt rises forming volcanism E.g. The Andes Mountain ...
Get out your pieces for Tectonicland Have your HOMEWORK out
... Answer these questions in your notebook: ...
... Answer these questions in your notebook: ...
plate tectonics
... mantle is forced upward to the surface at midocean ridges and cools to form new sea floor. Movement in Earth’s mantle forces sections of crust apart, allowing magma to flow onto Earth’s surface and form new crust. Therefore, the Atlantic Ocean is wider today than it was when Christopher Columbus cro ...
... mantle is forced upward to the surface at midocean ridges and cools to form new sea floor. Movement in Earth’s mantle forces sections of crust apart, allowing magma to flow onto Earth’s surface and form new crust. Therefore, the Atlantic Ocean is wider today than it was when Christopher Columbus cro ...
Plate Tectonic Theory Notes
... carrying pieces of continental and oceanic crust 2. Plates carry the ___________________________ or parts of the _________________ ___________ or _________________. 3. ___________________________________ combined what geologists knew about seafloor spreading, Earth’s plates, and continental drift in ...
... carrying pieces of continental and oceanic crust 2. Plates carry the ___________________________ or parts of the _________________ ___________ or _________________. 3. ___________________________________ combined what geologists knew about seafloor spreading, Earth’s plates, and continental drift in ...
Plate Tectonics Web Activity
... Geologists have known for over a century that a ridge exists in the middle of the Atlantic Ocean. The MidAtlantic Ridge is 6,500 feet (2,000 m) above the adjacent sea floor, which is at a depth of about 20,000 feet (6,000 m) below sea level. In the 1950s, a seismologist, a scientist who specializes ...
... Geologists have known for over a century that a ridge exists in the middle of the Atlantic Ocean. The MidAtlantic Ridge is 6,500 feet (2,000 m) above the adjacent sea floor, which is at a depth of about 20,000 feet (6,000 m) below sea level. In the 1950s, a seismologist, a scientist who specializes ...
plate tectonics - mfischerscience
... magnetic material on either side of a ridge. • This shows that new rock was coming from the ridges. ...
... magnetic material on either side of a ridge. • This shows that new rock was coming from the ridges. ...
Types of Plate Boundaries Submitted by WWW.ASSIGNMENTPOINT
... apart (Figure 1). Today's active divergent boundaries are midoceanic ridges (sea floor spreading centers). Divergent boundaries can also develop on land, as did those that broke up Pangaea about 200 million years ago. Continental rifting can end before the crustal mass has been fully separated. Thes ...
... apart (Figure 1). Today's active divergent boundaries are midoceanic ridges (sea floor spreading centers). Divergent boundaries can also develop on land, as did those that broke up Pangaea about 200 million years ago. Continental rifting can end before the crustal mass has been fully separated. Thes ...
Abyssal plain
An abyssal plain is an underwater plain on the deep ocean floor, usually found at depths between 3000 and 6000 m. Lying generally between the foot of a continental rise and a mid-ocean ridge, abyssal plains cover more than 50% of the Earth’s surface. They are among the flattest, smoothest and least explored regions on Earth. Abyssal plains are key geologic elements of oceanic basins (the other elements being an elevated mid-ocean ridge and flanking abyssal hills). In addition to these elements, active oceanic basins (those that are associated with a moving plate tectonic boundary) also typically include an oceanic trench and a subduction zone.Abyssal plains were not recognized as distinct physiographic features of the sea floor until the late 1940s and, until very recently, none had been studied on a systematic basis. They are poorly preserved in the sedimentary record, because they tend to be consumed by the subduction process. The creation of the abyssal plain is the end result of spreading of the seafloor (plate tectonics) and melting of the lower oceanic crust. Magma rises from above the asthenosphere (a layer of the upper mantle) and as this basaltic material reaches the surface at mid-ocean ridges it forms new oceanic crust. This is constantly pulled sideways by spreading of the seafloor. Abyssal plains result from the blanketing of an originally uneven surface of oceanic crust by fine-grained sediments, mainly clay and silt. Much of this sediment is deposited by turbidity currents that have been channelled from the continental margins along submarine canyons down into deeper water. The remainder of the sediment is composed chiefly of pelagic sediments. Metallic nodules are common in some areas of the plains, with varying concentrations of metals, including manganese, iron, nickel, cobalt, and copper. These nodules may provide a significant resource for future mining ventures.Owing in part to their vast size, abyssal plains are currently believed to be a major reservoir of biodiversity. The abyss also exerts significant influence upon ocean carbon cycling, dissolution of calcium carbonate, and atmospheric CO2 concentrations over timescales of 100–1000 years. The structure and function of abyssal ecosystems are strongly influenced by the rate of flux of food to the seafloor and the composition of the material that settles. Factors such as climate change, fishing practices, and ocean fertilization are expected to have a substantial effect on patterns of primary production in the euphotic zone. This will undoubtedly impact the flux of organic material to the abyss in a similar manner and thus have a profound effect on the structure, function and diversity of abyssal ecosystems.