ELECTROMAGNETIC FIELD OF EARTH
INTRODUCTION
The motions of the liquid iron and nickel outer core of the earth are thought to create the earth’s magnetic field. This magnetic field resembles a dipole as if a giant bar magnet was embedded inside. However, the axis of the dipole is not aligned with the rotational axis of the earth. Neither is it centered in the earth.
EARTH'S MAGNETIC FIELDS PROTECT US FROM SOLAR WIND AND SPACE RADIATION.
The Sun is a burning ball of gas that reaches such extreme temperatures that gas flies out from it at very high speeds. In fact, many of the electrons in the Sun’s atoms have enough energy to actually leave the atoms. The abandoned charged atoms are called ions. These ions and electrons flow outward from the Sun, and together they are known as the solar wind.
When the solar wind travels with the interplanetary magnetic field, the charged particles and magnetic fields interact with Earth’s magnetic field. Earth’s magnetic field, as it stretches out in space, is known as its magnetosphere. The solar wind pushes on the side of the magnetosphere facing the Sun, and pulls it out on the side facing away from the Sun. The pulling forms a long tail moving away from the Sun, and thus the magnetosphere resembles a wind-sock blowing in the wind. Electrical currents flow in the magnetosphere, and generate the lights in the sky known as the Northern and Southern Lights. Together these lights are known as aurora.
Sometimes the explosive solar wind will rush by Earth, making us all potentially vulnerable. Luckily Earth has a magnetic field and a thick layer of atmosphere protecting all living creatures from the particles and radiation that can come from such solar explosions.
When Mars lost its magnetic field, its atmosphere was ripped away by the solar wind leaving it apparently uninhabitable.
ABOUT CORONAL MASS EJECTION
a coronal mass ejection can lunch billions of tone charge partials and plasma from sun into space.some time a very large CME can effects our planet but most of time our earth's magnetic fields is protect our planet.
INTRODUCTION
The motions of the liquid iron and nickel outer core of the earth are thought to create the earth’s magnetic field. This magnetic field resembles a dipole as if a giant bar magnet was embedded inside. However, the axis of the dipole is not aligned with the rotational axis of the earth. Neither is it centered in the earth.
EARTH'S MAGNETIC FIELDS PROTECT US FROM SOLAR WIND AND SPACE RADIATION.
The Sun is a burning ball of gas that reaches such extreme temperatures that gas flies out from it at very high speeds. In fact, many of the electrons in the Sun’s atoms have enough energy to actually leave the atoms. The abandoned charged atoms are called ions. These ions and electrons flow outward from the Sun, and together they are known as the solar wind.
When the solar wind travels with the interplanetary magnetic field, the charged particles and magnetic fields interact with Earth’s magnetic field. Earth’s magnetic field, as it stretches out in space, is known as its magnetosphere. The solar wind pushes on the side of the magnetosphere facing the Sun, and pulls it out on the side facing away from the Sun. The pulling forms a long tail moving away from the Sun, and thus the magnetosphere resembles a wind-sock blowing in the wind. Electrical currents flow in the magnetosphere, and generate the lights in the sky known as the Northern and Southern Lights. Together these lights are known as aurora.
Sometimes the explosive solar wind will rush by Earth, making us all potentially vulnerable. Luckily Earth has a magnetic field and a thick layer of atmosphere protecting all living creatures from the particles and radiation that can come from such solar explosions.
When Mars lost its magnetic field, its atmosphere was ripped away by the solar wind leaving it apparently uninhabitable.
ABOUT CORONAL MASS EJECTION
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| credit : NASA |
a coronal mass ejection can lunch billions of tone charge partials and plasma from sun into space.some time a very large CME can effects our planet but most of time our earth's magnetic fields is protect our planet.
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