click below
click below
Normal Size Small Size show me how
VOLCANO 1- 1ST 16
Question | Answer |
---|---|
a weak spot in the crust where magma has come 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 it. | hot spot |
a substance that cannot be broken down into other substance. | 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 produes a change in the composition of matter. | chemical property |
the resistance of a liquid to flowing. | viscosity |
A material found in magma that is from the elements oxygen and silicon | silica |
A hot-moving type of lava that hardens to form smooth, rope-like coils. | pahoehoe |
A slow-moving type of lava that hardens to form rough chunks. | 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 |