- The earth’s magnetic field is confined within the core of the earth-
- The earth’s magnetic field protects the surface from strong electrical currents coming from the sun.
The option 2 and 3 is the correct option.
What is magnetic fields?
Magnetic fields is the space of imaginary lines near a magnetic body or electric current carrying body, in which the magnetic force can be experienced.
The magnet and magnetic fields is shown in the image attached below.
Given information-
The given options are,
- A) Magnets and magnetic fields were only just discovered in the last 500 years- In 16th century, physician William Gilbert scientifically detailed the concept of magnets. Even though the magnets used as compos before it.
- B) The earth’s magnetic field is confined within the core of the earth- The 99 percent of the earth's magnetic field is confined within the core of the earth. We only feel the small amount of the magnetic field that extent to surface and beyond it.
- C) The earth’s magnetic field protects the surface from strong electrical currents coming from the sun.-The magnetic field of the earth protects us from the radiations and the charge particle coming from the sun's surface.
- D) Magnetic fields are unreliable for use in navigation-Magnetic fields are most reliable for use in navigation. Mostly animals and in water transport the magnetic fields used as to detect the way.
Hence,
- The earth’s magnetic field is confined within the core of the earth-
- The earth’s magnetic field protects the surface from strong electrical currents coming from the sun.
The option 2 and 3 is the correct option.
Learn more about the Magnets and magnetic fields here;
https://brainly.com/question/7802337
