Science ch. 7 Crossword
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
                                       
 
 
Down: 1) the molten mixture of rock-forming substances, gases, and water from the mantle2) any property of a substance that produces a change in the composition of matter3) a slab of volcanic rock formed when magma forces itself across rock layers 4) a string of islands formed by the volcanoes alona deep-ocean trench6) a tall, cone-shaped mountain in which layers of lava alternate with layers of ash and other volcanic materials7) any characteristic of a substance that produces a change in the composition of matter8) a mass of rock formed when a large body of magma cools inside the crust9) the area covered by lava as it pours out of a volcano's vent10) a steep, sone-shaped mountain in which layers of lava alternate with layers of ash and other volcanic materials11) a weak spot in the crust where magma has come to the surface15) a slow-moving type of lava that hardens to form rough chunks; cooler than pahoehoe16) a deposit of hardened magma in a volcano's pipe18) the pocket beneath a volcano where magma collects20) a substance in which two or more elements are chemically joined21) a fountain of water and steam that builds up pressure underground and erupts at regular intervals22) an area where magma from deep within the mantle melts through the crust above it24) a material found in magma that is formed from the elements oxygen and silicon25) a volcano that is not currently active, but that may become active in the future26) a long tube through which magma moves from the magma chamber to Earth's surface28) liquid magma that reaches the surface; also, the rock formed when liquid lava hardens Across: 2) a bowl-shaped area that forms around a volcano's central opening5) a volcano that is no longer active and is unlikely to erupt again12) the heating of underground water by magma13) a slab of volcanic rock formed when magma squeezes between layers of rock14) the large hole at the top of a volcano formed when the roof of a volcano's magam chamber collapses16) a liquid's resistance to flowing17) the opening through which molten rock and gas leave a volcano19) the expulsion of ash, cinders, bombs, and gases during an explosive eruption23) a substance in which all the atoms are the same and cannot be broken down into other substances27) a wide, gently sloping mountain made of layers of lava and formed by quiet eruptions29) a major belt of volcanoes that rims the Pacific Ocean30) a hot, fast-moving type of lava that hardens to form smooth, ropelike coils
 

 

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