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Science ch.3 vocab 1
First 16 words of chapter 3
Question | Answer |
---|---|
a weak spot in the crust where magma has come to the surface | volcano |
the molten mixture of rock-forming substances, gases, and water from the mantle | magma |
liquid magma that reaches the surface; also the rock formed when liquid lava hardens | lava |
a major belt of volcanoes that rims the Pacific Ocean | Ring of Fire |
a string of islands formed by the volcanoes along a deep-ocean trench | island arc |
an area where magma from deep within the mantle melts through the crust above | hot spot |
a substance that cannot be broken down into other substances | element |
a substance in which two or more elements are chemically joined | compound |
any characteristic of a substance that can be observed or measured without changing the composition of the substance | physical property |
any property of a substance that produces a change in the composition of matter | chemical property |
the resistance of a liquid to flowing | viscosity |
a material found in magma that is formed from the elements oxygen and silicon | silica |
a hot, fast-moving type of lava that hardens to form smooth, ropelike coils | pahoehoe |
a slow-moving type of lava that hardens to form rough chunks; cooler than pahoehoe | aa |
the pocket beneath a volcano where magma collects | magma chamber |
a long tube through which magma moves from the magma chamber to Earth's surface | pipe |