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Notes: Plate Tectonics - Riverdale Middle School
Notes: Plate Tectonics - Riverdale Middle School

Magnetic Evidence for Seafloor Spreading Quiz
Magnetic Evidence for Seafloor Spreading Quiz

... 6) True or false. The Matuyama reverse was 2.48 to 3.4 million years ago. a) True b) False 7) What is not true about the magnetic stripes on the ocean floor? a) Stripes alternate across the ocean floor. b) Stripes mirror each other on either side of the mid-ocean ridge c) Stripes do not alternate a ...
Study Guide
Study Guide

... object becomes magnetized it experiences a torque because it will seek to align parallel, or anitparallel with the magnetic field. When an object becomes magnetized it seeks to align itself somehow due to the magnetic field because of the magnetic dipole moment per unit volume (magnetization) that o ...
Forces on Earth Outline Notes - Flipped Out Science with Mrs
Forces on Earth Outline Notes - Flipped Out Science with Mrs

... Forces on Earth Outline Notes: ...
Science Ch 5 webnotes
Science Ch 5 webnotes

... Seismometer: instrument that detects and measures waves produced by earthquakes Primary (P) waves: fastest; pass through solid and liquid layers; move back and forth Secondary(S) waves: half as fast; only through solid layers; move up and down Surface (L) waves: slowest like ripples on a pond; on Ea ...
Magnetic Moment
Magnetic Moment

... How do we interpret the results? 1. We can compare the magnetic moment with literature values for that ion 2. We can decide if the expected oxidation state of the metal matches 3. We can decide what the geometry of the complex is 4. We can decide if the complex is high spin or low spin 5. We can dec ...
layers-of-the-earth-d-rl-2016
layers-of-the-earth-d-rl-2016

... Match the correct description with the correct term. Write the letter in the space provided. ...
How The Earth Works
How The Earth Works

... 35 minutes to birth of Christ 1 hour+ to pyramids 3 hours to retreat of glaciers from Wisconsin 12 days = 1 million years 2 years to extinction of dinosaurs 14 years to age of Niagara Escarpment 31 years = 1 billion years ...
Chapter 7 Lecture 1
Chapter 7 Lecture 1

... • Greenhouse gas: molecules with 2 different types of elements (CO2, H2O, CH4) • Not a greenhouse gas: molecules with single or 2 atoms of the same element (O2, N2) ...
Scientists who aided theory of Evolution PPT
Scientists who aided theory of Evolution PPT

... more offspring than can survive because populations increase faster than earth can support This would mean that natural selection would be “the survival of the fittest” because there were not enough resources for every organism to survive. ...
Magnets - Delta Education
Magnets - Delta Education

... liquids, and gases.) Point out that a magnet can move an object without actually touching the object. • Ask, How can you “see” a magnetic field if it is invisible? (You can see its effect. Iron filings line up along the field lines and show where the magnetic field is.) • Have students read page 5 t ...
Theory Development
Theory Development

... 1929 - Convection Currents Theory – As Wegener’s theory was being dismissed because he did not have sufficient geological proof to explain why the continents moved, Holmes introduced his theory on thermal convection in the mantle. His theory explained that the molten material in the mantle moved in ...
Charges, currents & reference frames
Charges, currents & reference frames

... force on the positive charge. O However, electrons in wire are moving-gives rise to an electric current to the right (conventional or positive current to right). Current creates a magnetic field – left hand rule for electron current. External charge cuts across the magnetic field and is subjected to ...
solid rock
solid rock

... Continental drift - all continents were once together in a single landmass and have since drifted apart Pangaea – “all lands” ...
Earth layer notes Layers of the Earth Notes pt 2_2
Earth layer notes Layers of the Earth Notes pt 2_2

... * The Earth’s crust is like the skin of an apple. It is very thin compared to the other three layers. *The crust makes up 1% of the Earth. * The crust of the Earth is broken into many pieces called plates. ...
phase_4_ip_for_sci101
phase_4_ip_for_sci101

... lacked a mechanism which would have led the continents to drift. He did not explain clearly how the continents moved which would have made it easy to justify the time it took for the present day continents to move to where they are. During that time it was also hard to accept that the continents are ...
stressed out vocab answer key
stressed out vocab answer key

... Core: made up of two layers, the inner and outer core. The inner core is an extremely hot solid sphere of iron and nickel at the center of the earth. The outer core is the only liquid layer of the earth; a sea of mostly iron and nickel. Lithosphere: made up of the crust and a bit of mantle; divided ...
Quiz #2 - University of Hawaii at Hilo
Quiz #2 - University of Hawaii at Hilo

Test Review Building Up and Wearing Down the Surface
Test Review Building Up and Wearing Down the Surface

... develop in the first place and then identify the three types of glacial movement, explaining what makes them move in these directions. Draw a detailed, labeled diagram of what a cross-section of a glacier would look like with its various layers and characteristics. 3.) The history of the Earth, call ...
SEISMIC ACTIVITY (mainly shallow earthquakes)
SEISMIC ACTIVITY (mainly shallow earthquakes)

... 4. NEGATIVE GRAVITY ANOMALIES (melts) 5. SEISMIC ACTIVITY (mainly shallow earthquakes) 6. MAGNETIC ANOMALIES oriented parallel with the ridges ...
Inside the Earth
Inside the Earth

... • The core is made mostly of iron and nickel and possibly smaller amounts of lighter elements, including sulfur and oxygen. • The core is about 4,400 miles (7,100 kilometers) in diameter, slightly larger than half the diameter of Earth and about the size of Mars. • The outermost 1,400 miles (2,250 k ...
B - FIU
B - FIU

... •  Power plants convert other forms of energy into electrical energy. How is the conversion done? •  In the following demonstration, could you tell me what energy is converted to what other energies? ...
PLATE TECTONICS - Los Alamos Public Schools / Home
PLATE TECTONICS - Los Alamos Public Schools / Home

... temperature and pressure) that cause the outer core to move, because it is more fluid than the SOLID inner core, they move at different rates. • This provides our Earth with a MAGNETIC FIELD! Our planet works like a bar magnet which is why compasses point NORTH ...
5. The Theory of plate tectonics
5. The Theory of plate tectonics

... We can depict Mother Earth as a lady of 46, if her ‘years’ are megacenturies. The first seven of those years are wholly lost to the biographer, but the deeds of her later childhood are to be seen in old rocks in Greenland and South Africa. … Most of what we recognize on Earth, including all substant ...
Planetary Geology I
Planetary Geology I

... • Applying what we have learned about Earth's interior to other planets tells us what their interiors are probably like. © 2014 Pearson Education, Inc. ...
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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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