Evidence after wegener: seafloor spreading and
... (1962) by looking at the ages of oceanic crust • oldest continental crust ~4 billion years old, oldest oceanic crust only ~175 million years old ...
... (1962) by looking at the ages of oceanic crust • oldest continental crust ~4 billion years old, oldest oceanic crust only ~175 million years old ...
Standard EPS Shell Presentation
... place, a compass will not point directly to the geographic north pole. ...
... place, a compass will not point directly to the geographic north pole. ...
The Biot-Savart law
... your fingers, the circulation is positive, and the current that flows in the direction of your thumb is a positive current. Stated one more way: if you walk counter-clockwise around an Amperian loop that lies in the plane of the page, a positive enclosed current points out of the page and will produ ...
... your fingers, the circulation is positive, and the current that flows in the direction of your thumb is a positive current. Stated one more way: if you walk counter-clockwise around an Amperian loop that lies in the plane of the page, a positive enclosed current points out of the page and will produ ...
Introduction to Plate Tectonics
... • new oceanic crust continuously spread away from the ridges in a conveyor belt-like motion – Crust is destroyed at the trenches • After millions of years, oceanic crust descends into very deep, narrow canyons along the rim of the Pacific Ocean basin. – the Atlantic Ocean was expanding while the Pac ...
... • new oceanic crust continuously spread away from the ridges in a conveyor belt-like motion – Crust is destroyed at the trenches • After millions of years, oceanic crust descends into very deep, narrow canyons along the rim of the Pacific Ocean basin. – the Atlantic Ocean was expanding while the Pac ...
A Brief Outline of the History of Electromagnetism
... experiments. In effect, he showed that two parallel conductors carrying electricity in the same direction attract each other, whereas if the currents are in opposite directions, the conductors repel one another. From the experiments he claimed: • Outside its body, a permanent magnet is exactly equiv ...
... experiments. In effect, he showed that two parallel conductors carrying electricity in the same direction attract each other, whereas if the currents are in opposite directions, the conductors repel one another. From the experiments he claimed: • Outside its body, a permanent magnet is exactly equiv ...
Chapter 8. Maxwell`s equations and vector calculus
... due not directly to the action at a distance of one charge on another, but to the local action of the electric fields created by each of the charges. The second is from steady currents. If we run a current through each of two parallel wires at distance r from each other, then there will be a force F ...
... due not directly to the action at a distance of one charge on another, but to the local action of the electric fields created by each of the charges. The second is from steady currents. If we run a current through each of two parallel wires at distance r from each other, then there will be a force F ...
12-6
... The negative sign in Faraday’s Law is included to indicate the polarity of the induced emf, which is found by Lenz’ Law • The polarity of the induced emf is such that it produces a current whose magnetic field opposes the change in magnetic flux through the loop • That is, the induced current tends ...
... The negative sign in Faraday’s Law is included to indicate the polarity of the induced emf, which is found by Lenz’ Law • The polarity of the induced emf is such that it produces a current whose magnetic field opposes the change in magnetic flux through the loop • That is, the induced current tends ...
Talk, ppt
... Bow shocks are observed on a wide variety of astrophysical scales, from planetary magnetospheres to galaxy clusters. Some of the most spectacular bow shock nebulae are associated with neutron stars. A visually example is the Guitar Nebula: ...
... Bow shocks are observed on a wide variety of astrophysical scales, from planetary magnetospheres to galaxy clusters. Some of the most spectacular bow shock nebulae are associated with neutron stars. A visually example is the Guitar Nebula: ...
Lesson Plan
... temporary magnet is created, 3.) that the earth has a magnetic field, 4.) what causes the earth's magnetic field and 5.) a compass is a magnet that aligns with the earth's magnetic field. This lesson applies to the following BVSD Essential Learnings: Science Standard 2: Students know and understand ...
... temporary magnet is created, 3.) that the earth has a magnetic field, 4.) what causes the earth's magnetic field and 5.) a compass is a magnet that aligns with the earth's magnetic field. This lesson applies to the following BVSD Essential Learnings: Science Standard 2: Students know and understand ...
Document
... There is a large variety of wave modes which can be excited in a plasma. The mode structure depends on the composition, boundary conditions and theoretical description of the plasma. ...
... There is a large variety of wave modes which can be excited in a plasma. The mode structure depends on the composition, boundary conditions and theoretical description of the plasma. ...
Powerpoint Presentation Physical Geology, 10/e
... • P-wave shadow zone (103°-142° from epicenter) explained by refraction of waves encountering core-mantle boundary • S-wave shadow zone (≥ 103° from epicenter) suggests outer core is a liquid • Careful observations of P-wave refraction patterns indicate inner core is solid ...
... • P-wave shadow zone (103°-142° from epicenter) explained by refraction of waves encountering core-mantle boundary • S-wave shadow zone (≥ 103° from epicenter) suggests outer core is a liquid • Careful observations of P-wave refraction patterns indicate inner core is solid ...
AMPTE: NOTES ON THE INITIAL ... WORK IN PROGRESS _ _ _ _ _... _
... remarkably composed for a man being filmed by seven television cameras in a cramped trailer as he pondered a satellite 70,000 miles overhead-and the possibility of wasting about $15 million if his team didn't photograph the comet. He gently persuaded White Sands to put a more experienced astronomer ...
... remarkably composed for a man being filmed by seven television cameras in a cramped trailer as he pondered a satellite 70,000 miles overhead-and the possibility of wasting about $15 million if his team didn't photograph the comet. He gently persuaded White Sands to put a more experienced astronomer ...
Magnetic Circuits
... dt dt dt When two coils are wound on the same core we get from the Faraday law: ...
... dt dt dt When two coils are wound on the same core we get from the Faraday law: ...
Aurora
An aurora is a natural light display in the sky, predominantly seen in the high latitude (Arctic and Antarctic) regions. Auroras are produced when the magnetosphere is sufficiently disturbed by the solar wind that the trajectories of charged particles in both solar wind and magnetospheric plasma, mainly in the form of electrons and protons, precipitate them into the upper atmosphere (thermosphere/exosphere), where their energy is lost. The resulting ionization and excitation of atmospheric constituents emits light of varying colour and complexity. The form of the aurora, occurring within bands around both polar regions, is also dependent on the amount of acceleration imparted to the precipitating particles. Precipitating protons generally produce optical emissions as incident hydrogen atoms after gaining electrons from the atmosphere. Proton auroras are usually observed at lower latitudes. Different aspects of an aurora are elaborated in various sections below.