Question

4* volcano forms new pacific island
angela antrim
1northern pacific ocean—scientists have discovered a new, currently unnamed island in the northern pacific ocean. the small island is located in an isolated area between hawaii and the marshall islands. scientists believe that an erupting volcano formed the island. the new land mass measures roughly two square miles and rises nearly ten feet above sea level.
2islands form when magma inside the earth spills onto the earths surface. once magma hits the planets surface, it is called lava. the erupted lava then cools and hardens to form rocks and land. scientists believe the volcano that created this new island has been erupting under the ocean for hundreds of years. nevertheless, the lava has only recently risen above the waters surface to form land. scientists think the new island will expand as the volcano continues to erupt
3the theory of plate movement informs scientists knowledge of volcanoes. scientists believe the earths crust consists of eight major, as well as dozens of minor, pieces of land called plates. these plates float on a sea of magma that flows under the earths surface. the plates movements cause continents to shift and mountains to form. they are also responsible for earthquakes and volcanic eruptions.
4volcanoes can form in three ways. some volcanoes form when the earths plates separate and pull apart from each other. the movement allows magma to bubble up in the gap between the plates. the mid-atlantic ridge under the atlantic ocean is formed by separating plates. although few people know about it, it is actually the earths longest mountain chain
volcanoes can also occur when one plate is forced underneath another. the lower
4* which statement best reflects the authors purpose in writing this passage?
a. the authors purpose is to inform the reader about how a new pacific island was formed
b. the authors purpose is to entertain readers by making them laugh at life on a new pacific island
c. the authors purpose is to entertain the reader by discussing possible uses for a new pacific island
d. the authors purpose is to describe the various plants and animals that can be found on a new pacific island

Explanation:

The passage is an informative text that details the discovery of a new Pacific island, how it formed from an underwater volcano, and the geological theories behind volcanic island formation. Its core goal is to inform readers about the creation of this new landmass, not to entertain, persuade, or describe plants/animals (which are not mentioned).

Answer:

A. The author's purpose is to inform the reader about how a new Pacific island was formed