I WONDER - What Is Magnetism?

Magnetism is a force that acts at a distance, similar to gravity, but it occurs between magnets or between magnets and materials like iron or steel. Magnets have two poles, North and South, with opposite poles attracting and like poles repelling. The Earth functions as a giant magnet with a magnetic field extending into space, crucial for navigation and protection from solar radiation.

What materials are attracted to magnets?

Why is the Earth's magnetic field important for protecting us?