Astrong magnetic field surrounds earth. how does earths magnetic feild humans?

Earth's magnetic field deviates high energy particles (e.g cosmic rays) that are a risk for human health.

Explanation:

Cosmic rays are high energy charged particles (88% protons, 10% nuclei of helium, 1% heavier nuclei) that came from the outer space. The energies of these particles are in the range of 1 GeV to 10⁸ TeV. Since they are charged particles, they will be deviated by Earth’s magnetic field¹ (as a reminder: A magnetic field applies a magnetic force over a moving charged particle).

Earth’s magnetic field works as a shield to humans against high energy charged particles, if cosmic rays were in touch with a human body, it can break molecules that forms DNA structure². Modifying that structure can lead to diseases as cancer, for example.

Units:

GeV: Giga-electronvolt

TeV: Tera-electronvolt

¹Magnetic field: It is generated around the space of a moving charged particle.

²DNA structure: It is a compound of different molecules that provides information to cells functionality.

hail is a solid form of precipitation composed of large, layered ice particles called pellets that often have spherical shapes. this phenomenon occurs during thunderstorms in the could type known as cumulus

hope this you out ^w^