Technological Innovations from 1450 to 1750

Sailors used astrolabes to tell

• direction

• latitude

• speed

• time

His crew was the first to circumnavigate the world by sailing.

• Christopher Columbus

• Ferdinand Magellan

• Hernan Cortes

• Marco Polo

• gunpowder

• chronometer

• astrolabe

• compass

What is an astrolabe?

• Outbreak of disease that spreads quickly

• A Spanish Conqueror

• An instrument that measured the height of the sun or star

• A trip made to explore

What is a Caravel?

• A ride at the fair

• An improved method of shipbuilding

• A type of sail on a ship

• A ship used in exploration built by Portuguese shipbuilders