Volcanic Island Chain in Hawaii Task One || www.amanielts.in ||

 

 

The presented diagram details an island chain in Hawaii located in the Pacific Ocean. Looking from an overall perspective, it is readily apparent that volcanic formation begins deep under the Earth’s mantle and is visibly the result of multiple eruptions over the years.

Considering first of all the deepest layer buried in solid dense rock (2883 km down), there are vast repositories of magma in a central ‘hot spot’ where spume remains static. The magma spume then rises in a narrow channel and the shifting (7-9cm a year) Pacific tectonic plate to reach the surface and create the least mature volcanoes through multiple eruptions.

The diagram also contains information about Hawaii more specifically including that the oldest volcano was formed 80,000,000 years ago and the major islands include Niihau, Kauai, Oahu, Molokai, Lanai, Hahoolawa, Maui, and, the largest, Hawaii.

VOCABULARY 

presented shown

details describes

island chain group of islands

Hawaii an island state in the United States

located found in

Pacific Ocean water between China and the United States

Looking from an overall perspective, it is readily apparent that overall

formation creation

deep under the Earth’s mantle far inside the world

visibly can be seen

result of because of

multiple eruptions over the years many times the volcano exploded

considering first of all looking initially at

deepest layer fruther down

buried in covered deep in

solid dense rock very hard rock/stone

vast repositories of magma lots of lava

central in the middle

spume a foamy initial form of magma/lava

static unchanging

magma spume before it become lava

then next

rises comes up

narrow channel small passageway

shifting moving

Pacific tectonic plate the discs under the Earth that slide and create earthquakes and eruptions

reach the surface comes to the top

least mature youngest

multiple eruptions exploding many times

contains information gives details about

specifically in specific

major main

largest biggest