1. The world is round. Magellan's expedition was the first to circumnavigate the globe, proving that the Earth was not flat but a sphere.
2. The Pacific Ocean is the largest ocean in the world. Magellan named the Pacific Ocean because it was calmer than the Atlantic Ocean.
3. The Americas are separated from Asia. Magellan's expedition was the first to sail from Europe to Asia via the Americas, proving that the two continents were separate landmasses.
4. There is a strait between South America and Antarctica. Magellan's expedition discovered the Strait of Magellan, which connects the Atlantic and Pacific oceans.
5. The Earth's magnetic field is not constant. Magellan's expedition observed that the Earth's magnetic field varied from place to place, which led to the development of the compass.