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More ways to get Braingle...

I Think Not

Science brain teasers require understanding of the physical or biological world and the laws that govern it.

 

Puzzle ID:#27703
Fun:*** (2.84)
Difficulty:** (2.05)
Category:Science
Submitted By:metallicmanAus***
Corrected By:boodler

 

 

 



"One of the volcanoes on the Hawaiian islands just erupted and sent all kinds of rock and ash into the air! I just saw it on the news!", Fred spouted, running into the room. Everyone paid close attention to the television set as they changed it to the news channel. Liz, knowing that isn't true said, "Hawaii? I think not". How did Liz know the eruption never happened?



Answer

The type of volcano on Hawaii is a "Shield" volcano, and the volcano Fred explained is a "Composite" volcano.

A shield volcano has slowly flowing lava with no ash spouting out. Every volcano on Hawaii is this way. On the other hand a composite volcano shoots out rock and ash, with a small amount of lava. A good example would be Mt. St. Helen's. If a composite volcano were to erupt it would not be on Hawaii.

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