The division is based on differences in mechanical properties and in the method for the transfer of heat. The lithosphere is cooler and more rigid, while the asthenosphere is hotter and flows more easily. In terms of heat transfer, the lithosphere loses heat by conductionwhereas the asthenosphere also transfers heat by convection and has a nearly adiabatic temperature gradient. This division should not be confused with the chemical subdivision of these same layers into the mantle comprising both the asthenosphere and the mantle portion of the lithosphere and the crust:
Also, give an example of how they interact. What are the 3 major oceans, which is the largest, and which is the smallest? What is the difference between continental drift and plate tectonics? Draw a simple sketch showing the cross section of a typical passive continental margin.
Where does the salt in the oceans come from, and why does the salinity remain stable? What is the evidence for the big bang?
Where did the material in the nebula that eventually became our solar system come from? Why is the earth layered internally?
Where did the water in the early ocean come from? How do we know that the earth is 4. What is the geologic time scale? Why is liquid water so abundant on earth but not on the other planets in our solar system? How is water distributed throughout the Earth system?
How do we know so much about the internal properties and structure of Earth? How was the process of sea floor spreading discovered? What are the three types of plate boundaries?
At which type is new oceanic crust created, and at which type is it destroyed? Where would you find the youngest rocks crustal rocks — not sedimentary on the ocean floor, where would you find the oldest, and why?
What are the mechanisms that cause the tectonic plates to move? What is the difference between and active and passive continental margin? Where do mid ocean ridges form on the ocean floor, and where do trench form? How do sediments form, what controls the rate at which they form, how are they transported, and what is the most common place that they are deposited?
What is the difference between terrigenous and biogenic sediment? Why does the sized of sediment decrease as you go out on the continental shelf? How doe carbonate shelves differ from continental shelves with mostly terrigenous sediment? How does carbonate sediment get distributed across the continental shelf?
How do terrigneous sediments get to the continental rise? Why are there canyons on the continental shelf? Why is the bulk of the pelagic clay on the ocean floor centered just north and south of the tropics? Why is a large percentage of the terrigenous sediments in the western pacific volcanogenic?
Why is the sediment just of the continental shelf around Antarctica so poorly sorted? Why do oozes match what is living in the water column so well? If a large percentage of the skeletons of diatoms and radiolarions dissolve before they reach the ocean floor how do siliceous oozes form?
What is the structure of a water molecule and what are some of its special properties? How are water molecules bonded together in liquid water and what are some of the properties of liquid water because of these bonds?
Water has a high heat capacity. What does that mean? How far does light penetrate into the ocean, what is this region called, and what colors penetrate farther than others?
Why is seawater buffered, how does the carbonate buffer work, and what does this mean in terms of the chemical stability of the ocean? Salinity fluctuates at the surface of the oceans, but is very stable in the deep ocean.
Where is salinity highest at the surface, and where is it lowest? Why does this surface pattern exist?Plate tectonics has provided a unifying theory that explains the fundamental processes that shape the face of the Earth.
Alfred Wegener was born in Berlin, Germany on November 1, He spent a great deal of time in Greenland as part of several exploration and research expeditions. Oceanography Review for 2. How old is the Earth thought to be? billion years 3. Go back and review your notes from September. Layers of the Plate Tectonics.
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Plate tectonics (from the Late Latin tectonicus, from the Greek: τεκτονικός "pertaining to building") is a scientific theory that describes the large-scale motions of Earth's lithosphere.
The model builds on the concepts of continental drift, developed during the first few decades of the 20th century. Buy Introductory Oceanography (10th Edition) on regardbouddhiste.com FREE SHIPPING on qualified orders.