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Volcanoes
Topic Four, Lesson 4: Volcanoes and Earth's Surface
Question | Answer |
---|---|
a weak spot in the crust where magma has come to the surface | volcano |
a molten mixture of rock-forming substances, gases, and water from the mantle | magma |
liquid magma that reaches the surface | lava |
an area where magma from deep within the mantle melts through the crust above it | hot spot |
term used to describe a volcano that is no longer active and unlikely to erupt again | extinct |
term used to describe a volcano that is not currently active but able to become active in the future | dormant |
full of activity or engaged in continuous activity | active |
something made of a mixture of different parts or elements | composite |