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Volcano Test
6th grade science-Volcanos, Earthquakes
| Question | Answer |
|---|---|
| What are the three (3) types of volcanoes? | Shield, Cinder Cone, and Composite |
| What are the three (3) types of lava flows? | Pahoehoe, Aa, and Pyroclastic flow |
| A _______ volcano is a wide gently sloping mountain formed by thin layers of lava pouring out of the vent and hardening on other layers. | Shield Volcano |
| The point where magma leaves the volcano is the _____. | vent |
| The narrow tube where magma rises to the surface is called the ______. | pipe |
| _____ is magma that reaches the surface. | lava |
| A river of lava that pours down the volcano is the ____ ____. | lava flow |
| The place where magma is collected is the ____ ____. | magma chamber |
| This type of volcano is formed from lava flows alternating with eruptions of cinder, ash, and bombs- they are tall and cone shaped.... | composite volcanoes |
| _____ ______ volcanoes are steep slope cone shaped and formed from thick lava with ash cinders and bombs. | Cinder cone |
| ______ is a fast moving hot lava that looks like rope-like coils or a solid mass of wrinkles. | Pahoehoe |
| ____ is a cooler, slower moving lava. When it hardens, it forms a rough surface with jagged chunks. | Aa |
| _____ _____ occurs in an explosive eruption and throws out ash cinders and bombs. | Pyroclastic flow |
| Hot molten material made of rock, dissolved gasses and water is known as ____. | magma |
| The bowl-shaped area at the vent of the volcano is the ______. | crater |
| Magma forces its way out of the side of the volcano from the ____ ____. | side vent |
| hotspot | an area where magma burns through the crust like a blow torch |
| geyser | a jet of very hot water that shoots up out of the ground |
| extinct | a volcano that will never erupt again |
| caldera | a large craterthat is produced when a volcano empties its magma chamber |
| ring of fire | a chain of volcanoes around the Pacific plate |
| dormant | a 'sleeping' volcano |
| explosive | type of eruption that produces a pyroclastic flow |
| silica | combinations of oxygen and silicon |
| hot spring | a pool of water that is heated up by magma |
| active | a volcano that is currently erupting |
| quiet | eruption that produces two(2) types of lava |
| volcanic neck | what forms when magma in a volcano's pipe cools off |
| batholith | what is formed when a volcano's magma chamber cools off |
| How were the Hawaiian Islands formed? | shield volcanoes rising from a hotspot on the ocean floor caused the Hawaiian Islands to form. |
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