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Chapter 12.1 Notes
Chapter 12.1 Notes

... How Can Continents Move? Wegener’s evidence for continental drift did not explain how entire continents could change locations so his theory was not accepted yet. Eventually, his theory was accepted because: New scientific equipment allowed scientists to measure the slow but steady drift of Earth’s ...
5_2_Magnetism basics
5_2_Magnetism basics

... from anti-parallel to parallel if the decrease in its magnetic energy (2βH) is sufficient to supply the extra kinetic energy required to raise it to an empty translational energy level. (RECALL: β is the Bohr magneton...the intrinsic magnetic moment of an electron) Another way of saying this is that ...
The four layers of the Earth
The four layers of the Earth

... • The Earth’s mantle is the largest part of our Earth. • The upper part of the mantle moves slowly (kind of like squeezing silly putty) because of magma. • Convection is the cycle of heat rising, falling as it cools, and then heating and rising again. • We live on plates that are constantly moving! ...
8th Grade
8th Grade

... 4. A place of Earth’s crust where unusually hot magma has broken through the surface in the middle of a tectonic plate is a(n) ______________________________________. CONCEPTS 5. The world’s most active volcano is ____________________________ in __________________________. 6. The land of fire and ic ...
Electricity and Magnetism
Electricity and Magnetism

... Every magnet has two ends called poles. These poles are called north and south. Poles behave like electrical charges in many ways. North poles are attracted to south poles. South poles are attracted to north poles. Different poles attract each other. The same poles repel each other Magnetic poles ar ...
power point - HRSBSTAFF Home Page
power point - HRSBSTAFF Home Page

... Canada’s Physical Geography ...
European Motivations for Exploration Geography of the Spice Trade
European Motivations for Exploration Geography of the Spice Trade

... of all, spices to improve or disguise the taste of their foods. Several factors served as motivation for Europeans to engage in exploration for the purpose of developing international trading networks. First, eastern middlemen, mainly Muslims, controlled the overland trade routes from Asia to Europe ...
Structure of the Earth - Mercer Island School District
Structure of the Earth - Mercer Island School District

... High silica magma found in more explosive volcanoes due to build up of pressure with ...
7th Grade Earth Science State and District Outcomes Summary
7th Grade Earth Science State and District Outcomes Summary

... 3.1a Gather, analyze, and communicate data that explains Earth’s plates, plate motions, and the results of plate motions 3.1b Identify, interpret, and explain models of plates motions on Earth 3.1c Use maps to locate likely geologic “hot spots”, using evidence of earthquakes and volcanic activity 3. ...
Magnetism and Electromagnetism - CSE
Magnetism and Electromagnetism - CSE

... • Checked for science accuracy by NASA and THEMIS scientists • Designed to utilize math and writing The goal of these guides is to give students an appreciation of the major role magnetism plays on Earth and in space, and ultimately enable them to use NASA data as “scientists” researching our magn ...
Component Parts of a Dynamo
Component Parts of a Dynamo

... of a direct-current dynamo, a commutator is required in order to rectify the alternating e.m.f. s induced in the armature conductors. Construction of the Field Magnet. Except for very small machines, all modern direct-current dynamos are of multi-polar construction, that is, they have more than two ...
Plate Tectonics - Awtrey Middle School
Plate Tectonics - Awtrey Middle School

... Evidence that Pangaea existed 1. Continents fit together like puzzle pieces (mountain ranges lined up) 2. Mesosaurus – Reptile fossil found on South America and Africa – It couldn’t swim! 3. Glossopteris – Tropical plant fossil that was found in Antarctica! ...
Date: Block
Date: Block

... 3. Strike-Slip Fault: form when opposing forces cause rock to break and move horizontally. IV. Plate Tectonics and Mountain Building A. Folded Mountains: form when rock layers are squeezed together and pushed upward. They form at convergent boundaries. B. Fault-Block Mountains: form when this tensi ...
GENERAL SCIENCE 1110L LAB LAB 9: Sea Floor Spreading
GENERAL SCIENCE 1110L LAB LAB 9: Sea Floor Spreading

... According to the theory of plate tectonics, (from the Greek, tekto, “builder”), the Earth’s crust is broken into many slowly moving plates. Sea floor spreading occurs at the mid-ocean ridge where two plates are moving away from each other. Here, magma rises up from below as the sea floor spreads out ...
The Sea floor: Layers of the earth
The Sea floor: Layers of the earth

...  Cosmic explosion which produced dust ...
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8J Magnets and Electromagnets

The Earth - Usk Astronomical Society
The Earth - Usk Astronomical Society

... already raised by evaporation and plays its part in the Earth’s weather. The water falls as rain or snow and once again joins that on the surface which helps to sustain life on Earth. Like the Sun, and Moon, the Earth is approximately spherical, held in shape by gravity. We are pulled downwards as a ...
Benchmark 3 Study Guide
Benchmark 3 Study Guide

Long-Term and Short-Term Changes in Climate
Long-Term and Short-Term Changes in Climate

... Long-Term Changes are due to: Continental Drift • According to plate tectonics, all of the continents have been moving and are continuing to shift their position on the Earth’s surface • How it impacts climate? ▫ Changes ocean currents and wind patterns ▫ Changes how land masses are distributed whi ...
Earth PowerPoint
Earth PowerPoint

... Near the poles, the Van Allen belts intersect the atmosphere. The charged particles can escape; when they do, they create glowing light called aurorae. ...
Atmosphere - Spring Branch ISD
Atmosphere - Spring Branch ISD

... •For millions of years, the surface of the Earth has been moving. •The Earth is composed of three layers—the core at Earth’s center, the mantle layer of dense rock on the outer core, and the crust forming Earth’s surface. •Many scientists believe Earth was once a single land mass called Pangaea, but ...
WORLD GEOGRAPHY
WORLD GEOGRAPHY

... 2.What is the difference between a tornado and a hurricane? (think about where it starts) -tornado-starts over land; hurricane is a circular storm that starts over water 3.What type of forest looses their leaves in winter? ...
Magnetic Field due to a Current
Magnetic Field due to a Current

... Magnetic Field of a Solenoid • The field lines in the interior are – approximately parallel to each other – uniformly distributed – close together ...
Class 2: Chapter 1
Class 2: Chapter 1

... • Examining how different groupings of matter and energy operate and how changes in one system impacts other systems. ...
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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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