Term
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Definition
| A weak spot in the Earths crust where magma comes to the surface |
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Term
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Definition
| Molten materail of rock forming substances, gases, and water from the mantle |
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Term
| Where do most volcanoes form? |
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Definition
| tectonic plate boundires or hot spots |
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Term
| What is an example of a volcano(S) that formed at a tectonic plate boundiry? |
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Definition
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Term
| What is an example of a volcano that formed at a hot spot?** |
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Definition
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Term
| What is a divergent boundry volcano? |
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Definition
| A volcano that formed at a divergent boundry, where the EArths plates are pulling apart |
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Term
| What is an example of a divergent boundry volcano? |
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Definition
| Great Rift Valley, East Africa |
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Term
| What is a convergent boundry volcano? |
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Definition
| A volcano that formed where the Earths plates are colliding and subducting |
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Term
| What happens at an oceanic/oceanic convergent boundry that forms a volcano? |
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Definition
| 2 oceanic plates collide and the older one is pushed up into the mantle, it melts |
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Term
| What happen at an oceanic/continental convergent boundry to form a volcano? |
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Definition
| The oceanic plate subducts beneath the continenal causing trenches and volcanoes |
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Term
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Definition
| A hot spot is a place where hot magama rises to reach the surface. When this happens in the middle of a plate it stays consistant and lead to a trail of volcanoes. |
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Term
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Definition
| A hot spring is groundwater heated by a body of magma tht rises to the surface and collects in a natural pool |
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Term
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Definition
| A geyser is a ft of water and steam tht erupts and sprays the surface to pressure underground |
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Term
| What is an ex of a geyser? |
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Definition
| Old Faithfull, Yellowstone park |
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Term
| What is Geothermal energy? |
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Definition
| The energy from underground |
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Term
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Definition
| A lava plateau is a high level area of hardened lava |
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Term
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Definition
| A caldera is a large hole at the top of a volcano that can form if the roof of a volcanoes magma chamber collapses |
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Term
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Definition
| A slab of vertical/diagnoal volcano rock tht formed when magma cut thro layers of rock |
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Term
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Definition
| A horizontal slab of rock tht formed when magma squeezed and forced itslef btween layers of rock |
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Term
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Definition
| Huge rock masses tht form the core of mts |
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Term
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Definition
| Smaller bodies of hardened lava uplidted by compression |
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Term
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Definition
| Rich fertile soil formed by the break dowwn of lava ash and cinders near active volcanoes |
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Term
| What does magma harden to form? |
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Definition
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Term
| What is pyroclastic rock? |
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Definition
| The explosion of ash cinders bombs and gases during a explosive volcanic eruption |
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Term
| What is a quiet eruption? |
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Definition
| A quiet eruption is a eruption from a volcano that has low silica and viscosity magma that releases as easy flowing lava |
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Term
| What is an explosive eruption? |
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Definition
| A explosive eruption is a eruption from a volcano with high viscosity and high silica magma with trapped gases |
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Term
| What does an explosive eruption produce? |
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Definition
| Ash, Cinder, lava Bombs, pyroclastic flows and deadly gases |
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Term
| What is an active volcano?: |
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Definition
| One tht is currently erupting and shows signs tht is going to erupt again |
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Term
| What is a dormant volcano? |
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Definition
| One tht is not currently erupting but is expected to erupt again |
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Term
| What is an extinct volcano? |
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Definition
| A volcano tht is unlikly to erupt in the near future |
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Term
| How do scietists try to predict eruptions? |
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Definition
| By observing ground elevation movements, gases escaping vents, and temp increases in ground water |
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Term
| Wjat are the 3 types of volcanoes? |
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Definition
| Shieldm Cinder Cone, Composite |
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Term
| How are volcanoes classified? |
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Definition
| Shape, foramtion, lava type, and eruptions |
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Term
| What are shield volcanoes? |
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Definition
| Wide volcanpes with low visosity pahoehoe lava and gentle eruption |
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Term
| What are Cinder Cone volcanoes? |
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Definition
| Steep volcanoes with high viscosity AA lava and explosive eruptions |
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Term
| What are composite volcanoes? |
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Definition
| Tall volcanoes with pahoehoe and AA lava and switches from gentle to explosive eruptions |
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Term
| What is an eg of a shield volcano? |
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Definition
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Term
| What is an eg of a cinder cone volcano |
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Definition
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Term
| what is an eg of a composite volcano? |
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Definition
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Term
| What does a volcanoes shape composition and the way it erupts depend on? |
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Definition
| The viscosity of its magma |
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Term
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Definition
| A physical propery of a liquid tht describes its ability to flow |
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Term
| Do liquids with greater viscosity move faster or slower> |
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Definition
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