What is the GEOSPHERE All solid parts of
- Slides: 35
What is the GEOSPHERE? �All solid parts of Earth �Rocks, soils, minerals, sediments, magma The Grand Canyon, AZ
What are the layers of the Earth? https: //www. youtube. com/watch ? v=Wwii. Ojyfv. AU
Layers of the Earth • Geologists classify Earth’s layers two ways: chemically and physically • Chemical – by composition • Physicalbyofstructure Chemical Layers the Earth 1. Crust- O, Si, Al 2. Mantle- O, Si, Mg, Fe 3. Core- Fe, Ni
Physical Layers of the Earth • Lithosphere – Crust and upper mantle combined – Broken in chunks called tectonic plates – Oceanic plates are thinner and denser than continental plates • Asthenosphere - Layer of Jello-like magma in the mantle - Tectonic plates move due to
Physical Layers, cont. �Mesosphere �The rest of the mantle; molten rock �Outer Core �Liquid metal �Surrounds inner core �Inner Core �Densest layer �Solid metal
Theory of Plate Tectonics �Lithosphere (upper mantle and crust) is divided into pieces called tectonic plates. �These plates glide across the underlying asthenosphere like ice drifts across a pond. �Continents are located on tectonic plates and move around with them
Seafloor Spreading 1. Magma rises from asthenosphere 2. Creates new oceanic lithosphere 3. Pushes tectonic plates apart
Seafloor-Spreading
If new crust is being created by the process of seafloor spreading, is the Earth growing!?
Subduction �Subduction zones: A region where old crust is destroyed as it is pulled back down into the mantle
Plate Boundaries �The area where two plates meet is called a plate boundary. �Most earthquakes and volcanoes occur at or near plate boundaries Three main types of plate boundaries: 1. Divergent- separating 2. Convergent- colliding 3. Transform- scraping past
Transform Boundaries • 2 plates slide past each other • Not smooth. Plates lock, and build up tension. After too much tension builds, the plates “snap” causing earthquakes
Divergent Boundaries • When two plates separate • Most common on ocean floor • Creates Mid-Ocean Ridge
Divergence Forms New Ocean Floor
Convergent Boundaries Three Main Types: 1. Continental & Oceanic- causes deep ocean trench and land volcanoes Ex: Andes Mountains 2. Continental & Continental- causes large land mountain ranges Ex: Himalayan Mountains 3. Oceanic & Oceanic- causes deep ocean trench and island arc (chain of volcanic
Subduction Zone Continental + Oceanic Crust
Continental + Continental Crust
Subduction Zone Oceanic + Oceanic Crust (another view)
Subduction Zone Oceanic + Oceanic Crust
Some videos for your viewing pleasure… Plate Movement: https: //www. youtube. com/watch? v=kwf. NGatx. UJI � http: //www. youtube. com/watch? v=ryr. XAGY 1 dm. E&fea ture=endscreen&NR=1 San Andreas Fault: � http: //www. youtube. com/watch? NR=1&v=Zx. PTLmg 0 ZCw&feature =endscreen
Exit Ticket � 1. Arrows in the block diagram below show the relative movement along a tectonic plate boundary. What is this type of plate boundary called? a. b. c. d. transform plate boundary convergent plate boundary divergent plate boundary subduction plate boundary
Exit Ticket � 2. When two tectonic plates collide, oceanic crust usually subducts beneath continental crust because oceanic crust is primarily composed of igneous rock that is: a. b. c. d. thin and less dense thick and less dense thin and more dense thick and more dense
Exit Ticket � 3. The block diagram below shows the boundary between two tectonic plates. Which type of plate boundary is shown? a. divergent b. transform c. convergent d. complex
Exit Ticket � 4. The Himalaya Mountains were formed in a collision at a: a. divergent boundary b. convergent boundary c. transform boundary d. fracture zone
Exit Ticket � 5. In which Earth layer are most convection currents that cause seafloor spreading thought to be located? a. b. c. d. crust outer core asthenosphere inner core
Tectonic Plates Active Volcanoes Earthquakes Worldwide
- Opposite rays
- Honors its atomic
- Ex of solid solution
- Covalent network solid vs molecular solid
- Crystallography types
- Crystalline solid
- Crystalline solid and amorphous solid
- Crystalline substances
- When a solid completely penetrates another solid
- Interpenetration of solids
- Evaporation separation example
- Biosphere examples
- Elements of the geosphere
- Defenition of earth
- The layers of the geosphere
- Bill nye geosphere
- Geosphere atmosphere hydrosphere and biosphere
- Geosphere
- Sphere interactions examples
- Geosphere drawing
- How to draw a tree map
- Geosphere vocabulary
- What is geosphere made of
- Geosphere
- Chapter 3 the dynamic earth section 1 the geosphere
- Geosphere diagram
- Geosphere diagram
- Living things in hydrosphere
- Which sphere of earth includes icebergs?
- Geosphere
- Sample of solid figures
- What are the parts of a solid figures
- Hình ảnh bộ gõ cơ thể búng tay
- Ng-html
- Bổ thể
- Tỉ lệ cơ thể trẻ em