Magnetized Needle Compass

Needle turns to roughly north-south. Ask students to predict what will happen. Magnetize needle, float it, and let it settle. Key idea: A magnetized needle aligns with Earth's magnetic field. Ask: What invisible field is turning the needle? Safety and cleanup: Teacher handles needle; shallow dish. https://www.google.com/search?q=%22Magnetized+Needle+Compass%22+science+demonstration+experiment