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Our Busy Planet

Magazine 11

TermDefinition
active volcano a volcano that erupts often
caldera the bowl-shaped part of a volcano
contract to get smaller
dormant volcano an inactive volcano that still has hot magma underneath
extinct volcano a volcano that can no longer erupt
geyser an eruption of steam and hot water through the Earth's crust
lava molten magma that shoots up through the Earth when a volcano erupts
Mariana Trench an underwater crack in the Earth located in the Pacific Ocean
ring of fire an area in the Pacific Ocean with many active volcanoes
seismograph a tool that detects and measures earthquakes
tectonic plates parts of the Earth's crust that are constantly moving
volcanic island an island created by volcanoes
tiltmeter a tool that measures changes in the tilt of the ground
Created by: bschuelke
Popular Earth Science sets

 

 



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