![Sea Floor Spreading The Mid-ocean Ridge](http://s1.studyres.com/store/data/008390869_1-f043a72b54b9ba43843278154728f90f-300x300.png)
Ocean Chemistry - hrsbstaff.ednet.ns.ca
... Gases are also dissolved by seawater. Carbon dioxide (CO2) is dissolved in ocean water and used by phytoplankton to produce plant matter. Oxygen and nitrogen dissolved at the surface from the atmosphere are also present in seawater. Conversely, the ocean also releases these gases into the atmosphere ...
... Gases are also dissolved by seawater. Carbon dioxide (CO2) is dissolved in ocean water and used by phytoplankton to produce plant matter. Oxygen and nitrogen dissolved at the surface from the atmosphere are also present in seawater. Conversely, the ocean also releases these gases into the atmosphere ...
Plate Boundaries
... • The continents were once a super-continent called Pangea • the continents are plowing through the ocean floors---most people didn’t believe this ...
... • The continents were once a super-continent called Pangea • the continents are plowing through the ocean floors---most people didn’t believe this ...
Earth`s Structure Earth`s Structure Density Density Stratification
... outer core and solid inner core. Three spheres surround the rocky portion of the Earth. Hydrosphere includes all of the “free” water of the Earth contained in the ocean, lakes, rivers, snow, ice, water vapor and groundwater. Atmosphere is the gaseous envelope that surrounds the Earth and is main ...
... outer core and solid inner core. Three spheres surround the rocky portion of the Earth. Hydrosphere includes all of the “free” water of the Earth contained in the ocean, lakes, rivers, snow, ice, water vapor and groundwater. Atmosphere is the gaseous envelope that surrounds the Earth and is main ...
The Sea floor: Layers of the earth
... Why study the sea floor in this class? Over time, geological processes greatly ...
... Why study the sea floor in this class? Over time, geological processes greatly ...
Sea-floor Spreading
... beneath the earth's crust could ooze up between the plates in the Great Global Rift. As this hot magma cooled in the ocean water, it would expand and push the plates on either side of it -- North and South America to the west and Eurasia and Africa to the east. This way, the Atlantic Ocean would get ...
... beneath the earth's crust could ooze up between the plates in the Great Global Rift. As this hot magma cooled in the ocean water, it would expand and push the plates on either side of it -- North and South America to the west and Eurasia and Africa to the east. This way, the Atlantic Ocean would get ...
1 Eons, Eras, Periods and Epochs Dating by radioactive isotopes
... view of a new solar system 1500 l-y away in the Orion Nebula ...
... view of a new solar system 1500 l-y away in the Orion Nebula ...
2.4 Plate Tectonics - Northside Middle School
... 1969 - The Glomar Challenger drilled a series of holes in the Mid-Atlantic ridge. What they found revolutionized ocean geology! Continental rocks date the Earth at about 5 billion years old. Since the ocean floor is lower in the lithosphere, scientists expected to find older rocks at those depths. ...
... 1969 - The Glomar Challenger drilled a series of holes in the Mid-Atlantic ridge. What they found revolutionized ocean geology! Continental rocks date the Earth at about 5 billion years old. Since the ocean floor is lower in the lithosphere, scientists expected to find older rocks at those depths. ...
Chapter 26
... RNA could have been the template on which DNA was assembled DNA is much more stable and can be replicated more accurately so as genomes grew DNA grew ...
... RNA could have been the template on which DNA was assembled DNA is much more stable and can be replicated more accurately so as genomes grew DNA grew ...
Ch 20 Ocean Water Notes
... Temperature of Ocean Water • Pack Ice: a floating layer of sea ice that completely covers an area of the ocean surface. Ocean water freezes at about -1.9 C. • Thermocline: a layer in a body of water in which water temperature drops with increased depth faster than it does in other layers. ...
... Temperature of Ocean Water • Pack Ice: a floating layer of sea ice that completely covers an area of the ocean surface. Ocean water freezes at about -1.9 C. • Thermocline: a layer in a body of water in which water temperature drops with increased depth faster than it does in other layers. ...
PPT
... • Elevation of Earth’s surface displays a bimodal distribution with about 29% above sea level and much of the remainder at a depth of 4 to 5 kilometers below sea level. • Continental crust is mainly composed of granite, a light colored, lower density (2.7 gm/cm3) igneous rock rich in aluminum, silic ...
... • Elevation of Earth’s surface displays a bimodal distribution with about 29% above sea level and much of the remainder at a depth of 4 to 5 kilometers below sea level. • Continental crust is mainly composed of granite, a light colored, lower density (2.7 gm/cm3) igneous rock rich in aluminum, silic ...
Subduction zones
... Plates come together and are destroyed at converging plate boundaries. The great pressures exerted when plates collide create spectacular features. ...
... Plates come together and are destroyed at converging plate boundaries. The great pressures exerted when plates collide create spectacular features. ...
Ch 11 Notes File
... The amount of salt in ocean water also contributes to the movement of density currents o ...
... The amount of salt in ocean water also contributes to the movement of density currents o ...
Prescott`s Microbiology, 9th Edition 30 Microorganisms in Marine
... D. Microorganisms in the open ocean 1. The open ocean regions (pelagic) account for half of the world's photosynthesis; it is an oligotrophic environment (very low nutrient levels) that supports a diverse microbial community 2. Organic matter found in the photic zone (upper 200–300 meters) where lig ...
... D. Microorganisms in the open ocean 1. The open ocean regions (pelagic) account for half of the world's photosynthesis; it is an oligotrophic environment (very low nutrient levels) that supports a diverse microbial community 2. Organic matter found in the photic zone (upper 200–300 meters) where lig ...
esga3092 - 4J Blog Server
... 8. Circle the letter of the definition of reverse polarity. a. the loss of magnetism by iron-rich mineral grains when heated b. the gain of magnetism by iron-rich mineral grains when cooled c. what rocks that show the same magnetism as the present magnetic field have d. what rocks that show the oppo ...
... 8. Circle the letter of the definition of reverse polarity. a. the loss of magnetism by iron-rich mineral grains when heated b. the gain of magnetism by iron-rich mineral grains when cooled c. what rocks that show the same magnetism as the present magnetic field have d. what rocks that show the oppo ...
Global Variations of Chemical Composition of Oceans
... m is taken by the deep waters of Atlantic and Indian origin and the bottom waters from the Southern Ocean. In the Arctic Ocean the surface salinity totals 30.3 to 34.1‰. This low value is associated not only with precipitation excess over evaporation, but also with a tremendous riverine runoff. All ...
... m is taken by the deep waters of Atlantic and Indian origin and the bottom waters from the Southern Ocean. In the Arctic Ocean the surface salinity totals 30.3 to 34.1‰. This low value is associated not only with precipitation excess over evaporation, but also with a tremendous riverine runoff. All ...
3.3 Plates Move Apart
... setting breaking gas and water lines and causing fires that could not be stopped ...
... setting breaking gas and water lines and causing fires that could not be stopped ...
Ocean Basins
... • Trenches are deep pits in the ocean where the converging plate is subducted – Recall the cold ocean crust is sinking into the upper mantle of the continental plate – V-shaped due to spherical shape of Earth ...
... • Trenches are deep pits in the ocean where the converging plate is subducted – Recall the cold ocean crust is sinking into the upper mantle of the continental plate – V-shaped due to spherical shape of Earth ...
Do Nows
... What are the 3 most important gases in the ocean? How do the gases get into the water? What is this called? What is the relationship between temperature and dissolved oxygen? Why is carbon dioxide so soluble in water? What color penetrates water the most? The least? What causes turbidity? What happe ...
... What are the 3 most important gases in the ocean? How do the gases get into the water? What is this called? What is the relationship between temperature and dissolved oxygen? Why is carbon dioxide so soluble in water? What color penetrates water the most? The least? What causes turbidity? What happe ...
Oceans 11 – Exam Review
... structure, as we did in the “Sticky Molecule” lab. Why would 2 molecules “stick” together? Why is the temperature of coastal areas less likely to have dramatic changes than inland areas? Discuss specific heat and currents. How does the ocean affect the climate of an area on land? Discuss current ...
... structure, as we did in the “Sticky Molecule” lab. Why would 2 molecules “stick” together? Why is the temperature of coastal areas less likely to have dramatic changes than inland areas? Discuss specific heat and currents. How does the ocean affect the climate of an area on land? Discuss current ...
Chapter 19 Study Notes: The Ocean Basins
... transmission is to send out a series of _______ waves. – sonar – sound. ...
... transmission is to send out a series of _______ waves. – sonar – sound. ...
Science 8 Unit 1- Chapter 2 Oceans are important because: 1
... 4. Provide humans with food, minerals, and other resources_ The 5 major oceans are: ...
... 4. Provide humans with food, minerals, and other resources_ The 5 major oceans are: ...
Continental_Drift_and_Plate_Boundaries_
... • Convection currents in the mantle push the plates around on the surface of the Earth • Because of plate movements the surface of the Earth is constantly changing •Plate boundaries are where Earthquakes, volcanoes and mountain ranges occur • Crust is made at mid-ocean ridges ...
... • Convection currents in the mantle push the plates around on the surface of the Earth • Because of plate movements the surface of the Earth is constantly changing •Plate boundaries are where Earthquakes, volcanoes and mountain ranges occur • Crust is made at mid-ocean ridges ...
Anoxic event
![](https://commons.wikimedia.org/wiki/Special:FilePath/Aquatic_Dead_Zones.jpg?width=300)
Oceanic anoxic events or anoxic events (Anoxia conditions) refer to intervals in the Earth's past where portions of oceans become depleted in oxygen (O2) at depths over a large geographic area. During some of these events, euxinia develops - euxinia refers to anoxic waters that contain H2S hydrogen sulfide. Although anoxic events have not happened for millions of years, the geological record shows that they happened many times in the past. Anoxic events coincide with several mass extinctions and may contribute to these events. These mass extinctions include some that geobiologists use as time markers in biostratigraphic dating. It is believed oceanic anoxic events are strongly linked to slowing of ocean circulation, climatic warming and elevated levels of greenhouse gases. Enhanced volcanism (through the release of CO2 and other greenhouse gases) is the proposed central external trigger for the development of these events.