GEOLOGY

EARTH SCIENCE

VOLCANOES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The Hawaiian Islands are made up of mostly ____ volcanoes.
A
shield
B
composite
C
cinder cone
D
magma
Explanation: 

Detailed explanation-1: -The primary volcanoes on each of the islands are known as a shield volcanoes, which are gently sloping mountains produced from a large number of generally very fluid lava flows. Hawaiian volcanoes primarily erupt a type of rock known as basalt.

Detailed explanation-2: -The Hawaiian Islands are all classified as shield volcanoes. Hawaiian shield volcanoes are formed by lava flowing on the ocean floor and building layer upon layer into great volcanoes. The hot spot theory explains that magma from the upper mantle rises through a channel into a magma chamber called a hot spot.

Detailed explanation-3: -Hawaiʻi’s main volcanoes are “shield” volcanoes, which produce lava flows that form gently sloping, shield-like mountains. A good example is Maunaloa, the most massive mountain on earth, deceptively covering half of Hawaiʻi Island.

Detailed explanation-4: -The Hawaiian Islands were formed by volcanic activity. The Hawaiian Emperor seamount chain is a well-known example of a large seamount and island chain created by hot-spot volcanism.

Detailed explanation-5: -Types of Volcanoes: Shield volcanoes Mid-ocean islands such as Hawaii, the Galapagos, Reunion, or Bermuda are formed by basalt, the most basic and most fluid, less viscous of all types of common lava.

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