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Earth Crust in Motion Vocbaulary (Aca).doc
Earth Crust in Motion Vocbaulary (Aca).doc

... Mantle – the layer of hot, solid materials between Earth’s crust and core Outer core – a layer of molten iron and nickel that surrounds the inner core of the Earth Inner core – a dense ball of solid metal at the center of the Earth Lithosphere – a rigid layer made up of the uppermost part of the man ...
The History of the Earth
The History of the Earth

... – How does carbon-14 dating work? • The half-life is so short (5730 years) that this method can only be used on materials less than 70,000 years old. Archaeological dating uses this method. • Also useful for dating the Pleistocene Epoch (Ice Ages). ...
Review sheet for Exam 1, Locations and Maps
Review sheet for Exam 1, Locations and Maps

... 10. Be able to calculate how fast a plate is moving based on distance and time data 11. Be able to look at a map of the major topographic features of the Earth and say something about the tectonic setting (i.e., say we point out a ridge on the ocean floor- you should be able to identify whether this ...
Magnets - Delta Education
Magnets - Delta Education

... heating it above a certain temperature, called the Curie temperature, can cause the magnet to lose all or part of its magnetism. Earth itself is a giant magnet. The swirling molten iron in the outer core acts like an electric dynamo, or generator, producing and sustaining Earth’s magnetic field. Hum ...
Slide 1
Slide 1

... Solar constant measurements from several when the surface magnetic satellite experiments field is stronger (when ther are more sunspots)… • The amplitude of the solar irradiance variation is about 2 W/m2, or about 0.1%. • This variation is too weak to cause climate change. • But, if solar magnetic a ...
Plate Tectonics Vocabulary
Plate Tectonics Vocabulary

... The hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations ...
Unit 3: Plate Tectonics Slideshow REGENTS
Unit 3: Plate Tectonics Slideshow REGENTS

... Continental Drift Hypothesis The continents were all connected at one time Supercontinent was called Pangaea Pangaea broke apart up into two continents call Laurasia and Gondwanaland Continents are still moving today ...
7-2 Restless continents
7-2 Restless continents

... 3.______What did Wegener hypothesize happened to the continents? a. They broke up and re-formed. b. They drifted together to form a single continent. c. They broke up and drifted to their current locations. d. They sank into the ocean. 4. Explain how fossil evidence supports Wegener’s theory. ______ ...
Alfred Wegener - From Continental Drift to Plate Tectonics
Alfred Wegener - From Continental Drift to Plate Tectonics

... place and how could crustal rocks comprising mountains, have once existed on the world's ocean floor. Eduard Suess from Austria, the most influential theorist of his time postulated that oceans and continents are not stationary, but experience irregular periods of up and down motion, causing global ...
geol_15_patton_fall_..
geol_15_patton_fall_..

... Plate Boundaries: What are the three types of plate boundaries? What type of stress and strain is each type of boundary associated with? Does crust get shortened, lengthened, or neither at which plate boundary fault? What are some examples of these plate boundaries? What are the three types of conve ...
Unit 5 sun and star formation
Unit 5 sun and star formation

... measurements ...
Mid-ocean Ridge Spreading
Mid-ocean Ridge Spreading

Earth`s Crust in Motion
Earth`s Crust in Motion

Changes in the Earth`s surface
Changes in the Earth`s surface

... • Heat coming from nuclear reactions in the core • The heat causes convection currents in the mantle • This causes areas of the crust to move around ...
Magnetic Fields and Magnetic Field Lines
Magnetic Fields and Magnetic Field Lines

... Small compasses used to test a magnetic eld will not disturb it. (This is analogous to the way we tested electric elds with a small test charge. In both cases, the elds represent only the object creating them and not the probe testing them.) Figure 2 shows how the magnetic eld appears for a curr ...
Unit 4 - College Guild
Unit 4 - College Guild

... So far we have been studying rocks and the Earth’s structure. But now we will focus on the evolution of the Earth, starting from its early age until the present. As mentioned earlier, rocks record time and information. The oldest rocks are at the bottom of the rock layers, or strata, each representi ...
Permanent magnetic levitation of Levitron using periodic magnetic
Permanent magnetic levitation of Levitron using periodic magnetic

Layers of the Earth
Layers of the Earth

... analogies. Come up with another analogy and be prepared to share. ...
Word Bank Crust Inner core Mantle Outer Core Lithosphere
Word Bank Crust Inner core Mantle Outer Core Lithosphere

... 6. We learned that the inner core of the Earth is solid. Explain why it should be a liquid. _________________________________________________________________________________ _________________________________________________________________________________ 7. Why is the inner core solid? ____________ ...
Layers of the Earth ppt
Layers of the Earth ppt

... analogies. Come up with another analogy and be prepared to share. ...
Teaching Earth Dynamics: What`s Wrong with Plate Tectonics Theory
Teaching Earth Dynamics: What`s Wrong with Plate Tectonics Theory

... no seafloor is any older than that. How can that be reasonably explained? Still another big problem comes from Earth-orbiting satellite data: Modern measurements show that the Earth is presently not expanding. If, according to Earth expansion theory, all expansion took place during the last 200 mill ...
Axion Induced Oscillating Electric Dipole Moments
Axion Induced Oscillating Electric Dipole Moments

... The resulting EDM has been criticized for being proportional to and nonvanishing as ma -> 0. The same issue arises in the case of the anomaly. The result is intrinsically oscillatory (the nonlocal makes the source for the vector potential transverse, ie, not Coulombic) . The above Feynman amplitudes ...
Electromagnetism and ElectroMagnetic Induction
Electromagnetism and ElectroMagnetic Induction

... It’s the relative motion of one to the other which induces the current. Chpt 25 – Magnetism and Electromagnetic Induction ...
Presentation
Presentation

... Hypothesis? states that the continents had once been joined to form a single supercontinentPangaea, began to break apart 200 million years ago and form the present landmasses. There was one sea called Panthalassa “all seas”…Pangaea existed during the end of the Paleozoic era and end of ...
Preview Sample 1
Preview Sample 1

... the mid-ocean ridges is the discovery of bands, or stripes, on sea floor rocks known as magnetic anomalies. These anomalies occur because as molten rock cools, magnetic particles in the rocks point towards a magnetic point on the earth. At different times during geologic history, this magnetic point ...
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History of geomagnetism



The history of geomagnetism is concerned with the history of the study of Earth's magnetic field. It encompasses the history of navigation using compasses, studies of the prehistoric magnetic field (archeomagnetism and paleomagnetism), and applications to plate tectonics.Magnetism has been known since prehistory, but knowledge of the Earth's field developed slowly. The horizontal direction of the Earth's field was first measured in the fourth century BC but the vertical direction was not measured until 1544 AD and the intensity was first measured in 1791. At first, compasses were thought to point towards locations in the heavens, then towards magnetic mountains. A modern experimental approach to understanding the Earth's field began with de Magnete, a book published by William Gilbert in 1600. His experiments with a magnetic model of the Earth convinced him that the Earth itself is a large magnet.
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