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Big Ideas
Big Ideas

... The bar magnet represents a local magnetic field in the Sun due to the motion of charged gas in the photosphere makes the magnetic field Iron filings move in response to the forces of the magnetic field until they reach a state of equilibrium (sum of forces = 0; energy in = energy out). The iron ato ...
Earth Science
Earth Science

... Letter grades on all work are based on total points awarded, divided by total possible points earned. Daily work, quizzes, tests, labs, exhibitions, and projects are all graded on the total point system. It is my belief that daily work is just as important as tests in the ...
Rocky Planets Interiors and surface geophysics Experimental
Rocky Planets Interiors and surface geophysics Experimental

... –  The convection must be coupled with rotation (Coriolis forces) The modelization of this mechanism is extremely difficult •  Planets/satellites may also have induced magnetic fields –  Interiors of conductive material under the influence of an external magnetic field ...
Presentation
Presentation

... different layers. The crust is the layer that you live on, and it is the most widely studied and understood. The mantle is much hotter and has the ability to flow. The outer core and inner core are even hotter with pressures so great you would be squeezed into a ball smaller than a marble if you wer ...
Magnetic Field
Magnetic Field

... • FB is proportional to speed v, charge q, and field B. • FB is geometrically complex – depends on cross product o F = 0 if v is parallel to B. o F is normal to plane of both v and B. o FB reverses sign for opposite sign of charge o Strength of field B also depends on qv [current x length]. ...
Planetary Creature
Planetary Creature

... and I formed it to look like my creature. Then I made my creature with artistic clay and formed it to look like it. I made it look like a real creature so it can look artistic. ...
Marine Geology Final Exam Information and Review
Marine Geology Final Exam Information and Review

... basin, joint, normal fault, reverse fault, thrust fault, strike slip fault. ...
Computing the gravitational and magnetic anomalies - U
Computing the gravitational and magnetic anomalies - U

... modeling the anomalies due to bodies whose magnetic susceptibility exceeds about 0.01 emu. Although rocks rarely have magnetic susceptibilities this large, nevertheless this limitation must be kept in mind. Note that the user may choose any units for H,, the local value of Earth’s total magnetic fie ...
A Journey to the Center of the Earth
A Journey to the Center of the Earth

... The Earth s core is divided into two parts:  •  Outer Core: mostly molten metal that behaves  like a thick liquid  •  Inner Core: the solid, dense ball of metal.  The  pressure squeezes iron atoms together, making  ...
Plate Tectonics, Section 1
Plate Tectonics, Section 1

Earths Interior- Milky Way
Earths Interior- Milky Way

... CRUST or LITHOSPHERE – thin, brittle, hard, cold, solid outer shell INNER CORE – hot, solid (very high pressure, contains heavy metals) OUTER CORE – so hot, even pressure can’t force it into a solid. This layer is a liquid Cut the Milky Way bar in half: Label the three layers of the bar according to ...
Topic 12
Topic 12

... Example: •Hawaii ...
The Structure of the Earth
The Structure of the Earth

... Based on what the layer is made of ...
The earth`s layers: http://mediatheek
The earth`s layers: http://mediatheek

... Now click on Metamorphic Rock. What did these rocks use to be? ____________________________________________________________________ How are these rocks transformed into a new kind of rock? ____________________________________________________________________ Finally, click on Igneous Rock. Which of t ...
Edited_Lecture_Transcripts_03_05 - _repetidos
Edited_Lecture_Transcripts_03_05 - _repetidos

... of the Earth is important, but when we interact with each other or with objects around us, gravitation is completely unimportant. The gravitational force of a human being is negligible compared to the other forces we, interact with. The force that tends out turns out to dominate most of physics is e ...
Global coupling at 660 km is proposed to explain plate tectonics and
Global coupling at 660 km is proposed to explain plate tectonics and

Journey to the Center of the Earth
Journey to the Center of the Earth

Investigating Earth`s Interior
Investigating Earth`s Interior

... 7. Pressure increases as you travel from the crust to the center of the Earth. This is a result of the weight of the rock above. Why would the temperature increase? __ Increasing temperature is a result of increasing pressure, energy released form radioactive substance, and leftover heat form Earth’ ...
Space Cameras pdf
Space Cameras pdf

... EarthKAM Photography EarthKAM is a NASA-sponsored education program that enables students to take electronic photographs of Earth using a camera mounted in the Space Shuttle and, eventually, on the International Space Station. During an EarthKAM mission, students use interactive Web pages to target ...
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 ...
Alternative approaches to fusion energy
Alternative approaches to fusion energy

Getting to Know Earth
Getting to Know Earth

... •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 ...
Science Fun Night: Magic Magnets
Science Fun Night: Magic Magnets

... Gently tap the sheet. How does the pattern of iron filings compare with the pattern of arrows? ...
pptx - Caltech GPS
pptx - Caltech GPS

... Solution depends on the distribution of mass and velocity in the cloud before its collapse to form the sun One simple solution supposes all constituent masses arrived at the sun with a velocity equal to the escape velocity from the Sun today: ...
Topography of the earth`s surface
Topography of the earth`s surface

... Solution depends on the distribution of mass and velocity in the cloud before its collapse to form the sun One simple solution supposes all constituent masses arrived at the sun with a velocity equal to the escape velocity from the Sun today: ...
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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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