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... as the present magnetism field ...
Need to Know # 4 ~ The Lithosphere in Motion
Need to Know # 4 ~ The Lithosphere in Motion

... 5. Explain why the plastic nature of the asthenosphere and the presence of convection currents are key elements in the theory of plate tectonics. 6. Not all volcanic activity occurs along plate boundaries. Explain why. 7. Identify and explain each of the three (3) major tectonic processes. 8. Which ...
Lesson
Lesson

... What evidence is there to support the theory of plate tectonics? What energy source drives the movement of the oceanic and continental plates? How do rocks respond to the forces caused by plate tectonics? ...
It`s easy! Each plate is named after the major land mass
It`s easy! Each plate is named after the major land mass

... 6 Major Tectonic Plates on Earth Earth has many tectonic plates - like a giant jigsaw puzzle. The largest 6 plates are called the major plates. Your job is to know the names and locations of the 6 major plates. (It's easy! You will see how the names of the plates match up to the names of Earth's co ...
Quiz 3
Quiz 3

... 2. A plate includes only Continental Crust. True or False _________ 3. Which are the lightest plates? _____________________________ 4. What is a “plate” to a Geologist? _____________________________ ...
Earth`s Systems and Resources Quiz 2
Earth`s Systems and Resources Quiz 2

... 2) Marble is formed when intense heat and pressure is applied to limestone. What type of rock is marble? A) metamorphic C) extrusive igneous B) sedimentary D) intrusive igneous 3) More than a billion years ago, the continent of Africa hit North America, generating enormous pressure and heat while pu ...
8th Grade Science
8th Grade Science

... • Weight is gravitational force and is often confused with mass. Weight is proportional to mass, but depends upon the gravitational field at a particular location. An object will have the same mass when it is on the moon as it does on Earth. However, the weight (force of gravity) will be different ...
Presentation - Copernicus.org
Presentation - Copernicus.org

... plumes (thermochemical plumes), was responsible for appearance of such magmas. Those plumes were generated at the core-mantle boundary in D" layer and this process is active till now (Dobretsov, 2008). The thermochemical plumes are enriched in fluid components and their heads extended on shallower l ...
Edible Earth Layers Investigation
Edible Earth Layers Investigation

... 5. Your teacher will provide you with approximately one cup of melted rice krispie for the next layer of your model. 6. Wet your hands with water. 7. On the wax paper, spread out the rice krispie mixture into a thin sheet. Place the marshmallow with the spice drop into the center of the rice krispie ...
GEOL_15_mid_term_I_s..
GEOL_15_mid_term_I_s..

plate boundaries
plate boundaries

... This hypothesis later led to the theory of plate tectonics when evidence was found as to why the plates could move. Plate tectonics explains how many _______________________________________________. Changes in Landform areas over Geologic Time • __________________________________________ within the ...
past exam questions - University of Idaho
past exam questions - University of Idaho

... E. it depends on the viscosity 2. A rock with a density that is five times greater than the density of water would have a density of: A. 5 g/cm3 B. 5 kg C. 500 g/cm3 D. 500 kg E. water has no density ...
Answers - MrTubb
Answers - MrTubb

... 13. The Earth is the only planet known to support life. Which of the following is a major contributing factor to the Earth's ability to support life? A. B. C. D. ...
Word - University of Idaho
Word - University of Idaho

... E. it depends on the viscosity ...
Earthquakes - Lindbergh Schools
Earthquakes - Lindbergh Schools

... • 7. Which seismic wave cannot travel through material that is completely liquid?______________ • 8. Which seismic waves are the slowest and the most destructive?_______________ ...
volcanoes
volcanoes

... The word volcano originally comes from the name of the Roman god of fire, Vulcan. Volcanoes are usually located where tectonic plates meet. This is especially true for the Pacific Ring of Fire, an area around the Pacific Ocean where over 75% of the volcanoes on Earth are found. ...
Chapter 17-1
Chapter 17-1

... The temperature of the Earth __________________ greatly as one travels toward the center. At the surface the Earth’s average temperature is about _____ °C but in the inner core it is more than __________ °C. The high interior temperature is thought to be due to high concentrations of _______________ ...
Mid-Atlantic Ridge
Mid-Atlantic Ridge

... Continents have not always been in their present locations but have “drifted” there over millions of years. ...
Geology Content from the Frameworks
Geology Content from the Frameworks

...  Igneous rock undergoes weathering (or breakdown) to form sediment. The sediment is transported and deposited somewhere (such as at the beach or in a delta, or in the deep sea).  Igneous rocks are classified (or named) based on their composition (which minerals they contain) and texture (or the si ...
Unit 4 Chapter
Unit 4 Chapter

... In the late 1950’s geologist ___________came up with a new hypothesis. He proposed that the center valley was actually a ridge where molten rock would come to the surface and fill the cracks and push the land away. _____________renamed the process as “Sea Floor Spreading”. Hess’s hypothesizes were p ...
Chapter 3: Plate Tectonics
Chapter 3: Plate Tectonics

... through subduction and sink into the mantle. • Oceanic-continental collision: because oceanic crust is more dense, it can be subducted and cause the continental crust to bend and fold, making mountains and/or volcanoes. • Continental-continental collision: the two landmasses collide, bend, fold, etc ...
Features of Earthquakes (45)
Features of Earthquakes (45)

... Seismograph Stations • Primary waves arrive first at seismograph stations, and secondary waves, which travel slower, arrive second. Surface waves arrive last. • If seismic waves reach three or more seismograph stations, the location of the epicenter can be determined ...
Classroom Activities KS2 A3
Classroom Activities KS2 A3

... 5. Cut out and use this map to describe the location of Italy within the belts of earthquakes around the Earth. ...
Sample
Sample

... inner core is solid. Their composition is similar. 2. The lithosphere differs from the asthenosphere in two main ways. First, the lithosphere includes the crust, which is of lower density than the mantle. Second, the lithosphere is solid, while the asthenosphere consists of hot, slowly moving, weak ...
Geology Test
Geology Test

... 2. Rocks formed by cooling from a molten state are a. Precipitated rocks. b. Igneous rocks. c. Sedimentary rocks. d. Metamorphic rocks. 3. Rocks altered by heat and pressure beneath the Earth’s surface are a. Intrusive igneous rocks b. Extrusive sedimentary rocks c. Metamorphic rocks d. Igneous rock ...
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Geophysics



Geophysics /dʒiːoʊfɪzɪks/ is a subject of natural science concerned with the physical processes and physical properties of the Earth and its surrounding space environment, and the use of quantitative methods for their analysis. The term geophysics sometimes refers only to the geological applications: Earth's shape; its gravitational and magnetic fields; its internal structure and composition; its dynamics and their surface expression in plate tectonics, the generation of magmas, volcanism and rock formation. However, modern geophysics organizations use a broader definition that includes the water cycle including snow and ice; fluid dynamics of the oceans and the atmosphere; electricity and magnetism in the ionosphere and magnetosphere and solar-terrestrial relations; and analogous problems associated with the Moon and other planets.Although geophysics was only recognized as a separate discipline in the 19th century, its origins go back to ancient times. The first magnetic compasses were made from lodestones, while more modern magnetic compasses played an important role in the history of navigation. The first seismic instrument was built in 132 BC. Isaac Newton applied his theory of mechanics to the tides and the precession of the equinox; and instruments were developed to measure the Earth's shape, density and gravity field, as well as the components of the water cycle. In the 20th century, geophysical methods were developed for remote exploration of the solid Earth and the ocean, and geophysics played an essential role in the development of the theory of plate tectonics.Geophysics is applied to societal needs, such as mineral resources, mitigation of natural hazards and environmental protection. Geophysical survey data are used to analyze potential petroleum reservoirs and mineral deposits, locate groundwater, find archaeological relics, determine the thickness of glaciers and soils, and assess sites for environmental remediation.
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