In this chapter we learn there are two meanings of Pacific, one meaning calm and peaceful and one meaning the name of an ocean. So, this chapter talked about the Pacific Ocean and how it was the biggest ocean in the world. The deepest place in the whole world is in the Mariana Trench and this is 35, 797 feet down (almost 7 miles). Then it discussed Ferdinand Magellan and how he left Spain and went all around the wall. In 1519 he started out with 270 men and five small ships. Two years later in 1521, one ship with 18 men made it back to Spain. The only ship to make it back was the Victoria. They were the first people to sail all around the world. It said the hardest part was getting around the Southern most tip of South America. It took 38 days to sail around this rough and stormy southern tip. When he got to the ocean that is west of the South American tip, it was calm and peaceful and so he called it the Pacific Ocean, because of the definition of Pacific.
Questions:
1. Write one-million in numerals. Megan did this all by herself. I was amazed.
2.) What is the cardinality of the set of ships Magellan started with {Trinidad, Concepcion, San Antonio, Victoria, and Santiago}? She wrote 5.
3.) The set of ships that made it around the world and back to Spain is {Victoria}. What is the Cardinality of this set? One.
4.) What is the set of Magellan's ships that did not make it back to Spain? {Trinidad, Concepcion, San Antonio and Santiago}
5.) what is the cardinality of the set in problem number 4? Four.
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