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Volcanoes QB
| Question | Answer |
|---|---|
| What is the defintion of Volcano? | a weak spot in the crust where magma comes to a surface |
| What is the definiton of Lava? | where magma reaches to a surface |
| What is the definition of Magma? | a molten mixture of rock-forming substances, gases and water from the mantle |
| Volcanic Ash | very small solid particles ejected from a volcano during an eruption which have intermediate axes measuring 2 mm or less |
| Magma chamber | large underground pool of liquid rock found beneath the surface of the Earth. |
| crater | is a roughly circular depression in the ground caused by volcanic activity. It is typically a bowl-shaped feature within which occurs a vent or vents. |
| vent | is an opening exposed on the earth's surface where volcanic material is emitted. |
| pipe | A vertical conduit below a volcano through which magma has passed and that has become filled with solidified magma |
| lava flow | a mass of flowing or solidified lava. |
| Ring of fire | is an area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur |
| element | cannot be broken down |
| compound | can be broken down |
| Viscosity | the state of being thick |
| Silca | a hard, unreactive, colorless compound that occurs as the mineral quartz and as a principal constituent of sandstone and other rocks. |
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