volcanoes/plate tec. Word Scramble
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| Term | Definition |
| dike | magma that forces itself across rock layers hardens into a ____. |
| extinct | also known as a dead volcano. This volcano is unlikely to ever erupt again. |
| cinder cone | material can build up around the vent in a steep, cone-shaped hill or small mountain. this creates a ______ ____. |
| magma | a molten mixture of rock-forming substances, gases, and water from the mantle |
| lava flow | the spread of lava as it pours out of a vent. |
| pyroclastic flow | the mixture of hot gases, ash, cinders, and bombs that flow down the sides of a volcano when it erupts explosively |
| magma chamber | the place beneath a volcano where magma is collected |
| lava | when magma reaches the surface. |
| dormant | also known as a sleeping volcano. This is a volcano that scientists expect to awaken in the future and become active. |
| volcano | a mountain that forms in Earth's crust when molten material, or magma, reaches the surface. |
| sill | magma that squeezes between horizontal rock layers and harden to from a ____. |
| batholith | a mass of rock formed when a large body of magma cools inside of the crust. |
| vent | molten rock and gas leave the volcano through this type of opening. Some volcanoes only have one central opening, but most have several coming through the sides of the volcano. |
| pipe | a long tube that extends from Earth's crust up through the top of the volcano, connecting the magma chamber to Earth's surface. This is what magma moves upward through |
| volcanic neck | this forms when magma hardens in a volcanoes pipe and the surrounding rock later wears away |
| shield volcano | lava flows to build a wide, gently sloping mountain. This type of volcano is called a ______ _______. |
| silica | a material found in magma that forms from the elements oxygen and silicone. |
| Ring of Fire | One major belt of volcanoes. It includes the many volcanoes that rim the Pacific Ocean. |
| island arc | The resulting of volcanoes sometimes create a string of islands called _______ ___. |
| hot spot | an area where material from deep within Earth's mantle rises through the crust and melts to form magma. |
| crater | a bowl-shaped area that may form at the top a volcano around the central vent. |
| composite volcano | a tall, cone-shaped mountain in which layers of lava alternate with layers of ash |
| caldera | the hole left when a volcano collapses. |
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Giana.gabriel
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