A. It has no relation to the Earth's interior structure. B. It can only tell us about the surface temperature. C. Changes in the magnetic field can indicate the movement of materials in the core. D. It can directly show the thickness of the mantle. 相关知识点: 试题...
Physics of the Earth and Planetary InteriorsHide, R. & Roberts, P.H., 1979. How strong is the magnetic field in the Earth`s liquid core?, Phys. Earth planet. Inter., 20, 124-126.Hide, R. and Roberts, P. H.: 1979, 'How Strong is the Magnetic Field in the Earth's Liquid ...
Professor: Okay, keep in mind that solar wind is electrically charged, which means that it interacts with the magnetic field as electromagnetic theory tells us.Okay, how does it interact?Earth, magnetic field deflects most the solar wind, makes it flow around the earth without getting very clo...
Now, 1Gauss is about 6.5 magnetic field lines per square inch. If you place the tip of your index finger to the tip of your thumb, enclosing approximately 1 square inch, four magnetic field lines would pass through that hole due to the earth's magnetic field!
How did the chemical makeup of our planet's core shape its geologic history and habitability? Life as we know it could not exist without Earth's magnetic field and its ability to deflect dangerous ionizing particles from the solar wind and more far-flung cosmic rays. It is continuously gener...
Another extension of the results made possible by the Magsat data is simultaneous determination of a model of the fields from the magnetosphere, the ionosphere, and internal to the Earth. In this case, data from the Magsat and POGO satellites and magnetic observatory hourly mean and annual ...
Planet Earth is surrounded by a powerful magnetic field generated by the movement of the liquid iron in its core. This movement actually generates an electrical charge that creates the magnetic field. The field helps to trap solar radiation and tiny plasma particles that could damage the ...
Some animals can sense the earth's magnetic field (磁场),while humans can't.This magnetic field guides a certain kind of fish when they swim a long way to a place and then back.How can this kind of fish do that?It is still a mystery.Scientists have no good an...
Thenorthern lightsare caused by electrically charged particles from the sun smashing into Earth's magnetic field. This "solar wind" is funneled down to the magnetic poles of the Northern and Southern Hemispheres, creating green, red, and blue swaths that swivel and shape-shiftover the Arctic Ci...
If you want to get from a point at the bottom of a map to one at the top, you need to head true north.True northis a geographical direction represented on maps and globes by lines oflongitude. Each line of longitude begins and ends at the Earth's poles and represents direct north an...