| A | B |
|---|
| Are most of the Earth's volcanoes dormant or active? | dormant |
| Where does magma that reaches the earth flow out? | vent |
| Hot Spots | The location in the mantle that is hotter than other areas and that melts rock, which is forced torward the crust as magma. |
| What are three types of volcanoes? | compsite, cinder cone, and shield |
| Silica is composed of what elements? | silicon and oxygen |
| What are the bits of rock solidified lava dropped from the air called? | tephra |
| Compostie Volcano | Volcano formed by alternating layers of tephra and lava and that is found mostly where Earth's plates come together. |
| Shield Volcano | Broad Volcano with gently sloping sides formed when hot, fluid lava flows from one or more vents. |
| Cinder Cone Volcano | Steep-sided volcano made of loosely packed tephra. |
| Caldera | Large opening formed when the top pf a volcano collapses. |
| Batholith | Largest intrusive igneous rock bodies that form when magma cools underground before reaching Earth's surface. |
| Volcanic Neck | Solid, igneous core of a volcano left behind when a volcano stops erupting and the softer cone erodes away. |
| Dike | Intrusive igneous rock body formed when magma is squeezed into vertical layers and hardens. |
| Sill | Intrusive igneous rock body that forms when magma is squeezed into a horizontal crack between rock layers and hardens. |
| Crater | Steep-walled depression around a volcano's vent. |
| What is a dormant volcano? | Volcanos that are not currently active. |
| What kinda explosion does silica-rich magma produce? | Explosive |
| What kind of explosion does silica-poor magma produce? | Nonexplosive |
| What kind of eruption does a shield volcano have? | Nonexplosive/ Quite |
| What is the smallest form of tephra? | Volcanic ash |
