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| solidified basaltic lava flow on land that has formed with rough, jagged surfaces |
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| a large, crater-shaped basin formed after the top of a volcano collapses |
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| a cone-shaped volcano formed from lava fragments that have been ejected from a volcanic vent |
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| volcano made of layers of hardened lava flows and pyroclastic materials |
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| an area of volcanic activity that results from a plume of hot solid material that has risen from deep within Earth's mantle |
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| fast-moving mudflow that occurs when the heat associated with a volcanic eruption melts snow and ice on top of a volcano |
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| magma that reaches Earth's surface |
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| a plateau formed from basaltic lava pouring from a crack or fissure in Earth's surface |
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| solidified basaltic lava flow on land that has formed with smooth, ropelike surfaces |
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| lava that cools underwater, taking on a distinctive pillow-like shape as it hardens |
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| a dense, superheated cloud of gases and pyroclastic materials that moves rapidly downhill from an erupting volcano |
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| solid rock fragments that are ejected during a volcanic eruption |
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| a shield-shaped volcano with a broad base and gently sloping sides that is made of basaltic lava |
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| a substance's resistance to flow |
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| an opening in Earth's crust through that molten rock, gases, and ash erupt; also the landform that develops around this opening |
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