Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
stady stack Volcanoe
| Term | Definition |
|---|---|
| element | A substance that cannot be broken down into other substances |
| viscosity | The resistance of a liquid to flowing |
| silica | A material found in magma that is formed from the elements oxygen and silicon |
| pahoehoe | A hot, fast-moving type of lava that hardens to form smooth, ropelike coils |
| aa | A slow-moving type of lava that hardens to form rough chunks; cooler than pahoehoe |
| compound | A substance in which two or more elements are chemically joined |
| lava | Liquid magma that reaches the surface; also, the rock formed when liquid lava hardens |
| magma | The molten mixture of rock-forming substances, gases, and water from the mantle |
| shield volcano | A wide, gently sloping mountain made of layers of lava and formed by quiet eruptions |
| cinder cone volcano | A steep, cone-shaped hill or small mountain made of volcanic ash, cinders, and bombs piled up around a volcano’s opening |
| composite volcano | A tall cone-shaped mountain in which layers of lava alternate with layers of ash and other volcanic materials |
| crater | A bowl-shaped area that forms around a volcano’s central opening |
| caldera | The large hole at the top of a volcano formed when the roof of a volcano’s magma chamber collapses |
| batholith | A mass of rock formed when a large body of magma cools inside the crust |
| lava plateau | High level area formed by repeated lava flows |
| sill | A slab of volcanic rock formed when magma squeezes between layers of rock |
| dike | A slab of volcanic rock formed when magma forces itself across rock layers |
| vent | The opening through which molten rock and gas leave a volcano |
| pipe | A long tube through which magma moves from the magma chamber to Earth’s surface |
| hot spring | groundwater heated by a nearby body of magma rising to the surface and collects in a natural pool |
| ring of fire | A major belt of volcanoes that rims the Pacific Ocean |
| lava flow | The area covered by lava as it pours out of a volcano’s vent |
| magma chamber | The pocket beneath a volcano where magma collects |
| getser | A fountain of water and steam that builds up pressure underground and erupts at regular intervals |
| volcanic ash | fine rocky particles as small as specks of dust |
| dormant | A volcano that is not currently active, but may become active in the future |
| active | A volcano that has shown signs of erupting and has erupted resently |
| extinct | A volcano that is no longer active and is unlikely to erupt again |
| subduction | The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary |
Created by:
1963246332