Astronomy The Earth\'s magnetic field protects life on Earth from, Hannonic Rays

Question

Astronomy

The Earth's magnetic field protects life on Earth from, Hannonic Rays. Cooling effects of volcanism. Beta rays. Solar Cosmic Rays. The magnetic structure of ancient rocks suggests that The Earth's magnetic field has reversed its direction several times. The Earth's magnetic field has stayed the same over time. The Earth's magnetic field recently formed. The Earth's magnetic field stopped the Earth form rotating. Charged particles leak through the magnetopause that form the magnetopause leak. that form the Van Allen radiation belts. that form the bow shock that form solar flares. The interaction of the particles and the atmosphere gives us Solar time. cause ozone.

Explanation / Answer

20)

ANSWER : D : Solar cosmic rays

Earth's magnetic field serves to deflect most of the solar wind, whose charged particles would otherwise strip away the ozone layer thatprotects the Earth from harmful ultraviolet radiation.

21)

ANSWER : A) earth's magnetic field has reversed several times

Earth's magnetic fieldchanges over time because it is generated by a geodynamo (in Earth's case, the motion of molten iron alloys in its outer core)

22)

Inside a boundary called the magnetopause, the earth's magnetic field is dominant over the effects of the solar wind. The small fraction of the charged particles which do leak through the magnetopause are trapped in two large doughnut-shaped rings called the Van Allen radiation belts.

ANSWER : B

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