Tel: +86-13817790968
Email: [email protected]
Tel: +86-13817790968
Email: [email protected]
Hey there, kids! Ho, today we are going to talk about something very cool and very complex — the magnet inside our Earth. Did you know that the Earth has an extra special shield all its own? That’s pretty neat, right? It invisibly shields us day to day!
The strong and powerful force of the Earth magnetic field surrounds our whole planet! It is kind of like a giant invisible shield that protects us from the not-so-nice things that can come from outer-space. The bad stuff is cosmic rays and solar winds. You work with data until October 2023 The Living things such as plants, animals, and humans can be severely at risk from these things! Fortunately the Earths magnetic field is there to protect us from harm. It’s like a superhero defending us in ways we can’t always see.”
So, how, exactly, does the Earth’s magnetic field protects us from cosmic rays and solar winds? Why, it acts like a force field! Think of it as a big wall that these bad things cannot penetrate. They get bounced away by the magnetic field and circle the Earth rather than coming directly toward us. This means we are free to go outside and bask in the sunshine without fear of these damaging rays penetrating through to our skin. Isn’t that amazing?
Where does this magical magnetic field come from, you might ask. It is generated by something known as the geodynamo. The geodynamo can be thought of as a colossal machine buried within the planet. It keeps all spinning and swirling around, and that makes the magnetic field we have surrounding our world. This process occurs continuously and is what keeps out magnetic field active and functioning.
Earth’s magnetic field isn’t one giant region. In reality, it's two separate entities—the North Magnetic Pole and the South Magnetic Pole. These are the poles of the magnetic field. They’re the areas where the lines of magnetic force are coming out of the Earth and headed up into the sky. If you were to then hold a compass up to these poles, you should see that the needle of the compass would actually point directly to them instead of pointing toward north as we would typically expect. This is a fun way to watch our Earth’s magnetism in action!
We have discovered much about how Earth’s magnetic field acts as an armamentarium of defence, but did you know that many other things employ magnetic fields as well? They are important in medicine, transportation, and even in everyday items like refrigerators we have in our homes!
A particularly cool application of magnetic fields is something called magnetic levitation (maglev for short). Maglev is a cool technology that uses magnets to make something float in the air. Many trains use maglev technology to travel ultra-fast—375 miles per hour max! It is faster than most cars, and is all made possible from the power of magnets!
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