Answer the questions at the end based on the text.

The Pacific Ocean is the largest and deepest of Earth's oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south and is bounded by Asia and Australia in the west and the Americas in the east.

At in area (as defined with an Antarctic southern border), this largest division of the World Oceanand, in turn, the hydrospherecovers about 46% of Earth's water surface and about one-third of its total surface area, making it larger than all of Earth's land area combined. Both the center of the Water Hemisphere and the Western Hemisphere are in the Pacific Ocean. The equator subdivides it into the North Pacific Ocean and South Pacific Ocean, with two exceptions: the Galapagos and Gilbert Islands, while straddling the equator, are deemed wholly within the South Pacific. Its mean depth is . The Mariana Trench in the western North Pacific is the deepest point in the world, reaching a depth of . The western Pacific has many peripheral seas.

Though the peoples of Asia and Oceania have traveled the Pacific Ocean since prehistoric times, the eastern Pacific was first sighted by Europeans in the early 16th century when Spanish explorer Vasco Nunez de Balboa crossed the Isthmus of Panama in 1513 and discovered the great "southern sea" which he named "Mar del Sur" (in Spanish). The ocean's current name was coined by Portuguese explorer Ferdinand Magellan during the Spanish circumnavigation of the world in 1521, as he encountered favorable winds on reaching the ocean. He called it "Mar Pacifico", which in both Portuguese and Spanish means "peaceful sea".

1. What ocean is this article talking about?
2. What is in the east of the ocean?
3. What about the west?
4. What is the Mariana Trench?
5. The ocean's current name was by which explorer?
6. During what?
7. in what year?
8. what did he call it?
9. what does it mean?
10. Does the western pacific consists of many peripheral seas?

Numbered answers:
1. The Pacific Ocean
2. the Americas
3. Australia
4. the deepest point
5. Ferdinand Magellan
6. during the Spanish circumnavigation of the world
7. 1521
8. Mar Pacifico
9. peaceful sea
10. yes