Question

watch it! go to this link and watch the video: https://www.youtube.com/watch?v=8pyql9y7vzo \bill nye magnetism part 1 (edited) the url is case - sensitive. then answer these questions: 1. what three minerals are attracted to a magnet? 2. what is it about these minerals that make the earth one big magnet? 3. magnetism is made up of moving electrons. where do these moving electrons come from when making an electromagnet? 4. what is it that makes a magnet different from a piece of iron that is not magnetic? is your work saved? go back to lab room

Explanation:

1. Iron, nickel, and cobalt are ferromagnetic materials which are strongly attracted to a magnet.
2. The Earth has a magnetic field due to the movement of molten iron - nickel alloy in its outer core. These minerals' magnetic properties contribute to the overall magnetic field.
3. In an electromagnet, the moving electrons come from the electric current flowing through the wire wrapped around a core (usually of iron - like material).
4. A magnet has its magnetic domains aligned, creating a net magnetic field, while in non - magnetic iron, the magnetic domains are randomly oriented.

Answer:

1. Iron, nickel, cobalt
2. Movement of molten iron - nickel alloy in Earth's outer core and their magnetic properties.
3. Electric current flowing through the wire.
4. Alignment of magnetic domains in a magnet; random orientation in non - magnetic iron.