| Term | Definition |
| astrolabe | early navigational tool |
| caravel | small ship built in the 1400's to sail against the wind |
| cartographer | mapmaker |
| colonists | settlers in a colony |
| colony | place ruled by another country |
| conquistadors | Spanish soldier (conqueror) |
| circumnavigate | go around |
| claim | declare to have won |
| expedition | journey made for a special purpose |
| exploration | searching for the unknown |
| galleon | ship used by the Spanish in 1500, 1600's to carry gold, silver; was armed |
| navigation | study of how to plan and control the course of a ship |
| Northwest Passage | a direct water route through North America |
| missions | settlements in New Spain (usually religious) |
| plantation | large farm or estate |