Final answer:
The magnetosphere is the region above Earth's atmosphere where charged particles are affected by Earth's magnetic field. The magnetic field is generated by Earth's liquid metallic core and can cause geomagnetic storms. These storms can impact electric and magnetic systems on Earth.
Step-by-step explanation:
The region above Earth's atmosphere in which charged particles are affected by Earth's magnetic field is called the magnetosphere. The Earth's magnetic field is generated by moving material in Earth's liquid metallic core, which sets up a circulating electric current. When charged particles from the Sun's solar wind enter the Earth's magnetic field, they can cause geomagnetic storms and affect electric and magnetic systems on Earth.