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Science Chapter 8
| Question | Answer |
|---|---|
| What is a volcano? | A depositional landform built from solidified magma. |
| Igneous | Refers to anything having to do with molten mantel |
| Which kind of igneous structure is a volcano? | Extrusive igneous feature |
| Describe the general features of a volcano. | A volcano is a depositional mountain built up by the emission of hardened lava through a vent. The lava comes from a magma chamber deep underground. As the layers of hardened lava build up, the lava pours out from a crater at the top of the volcanic con |
| What is a crater? | A depression at the top of the cone. |
| Name the 3 main types of volcanic emmissions | 1. Liquids 2. Gases 3. Solids |
| True or False: Nearly all scientists agree that bilding on or near a dormant volcano is not a good idea. | False |
| Name 3 kinds of Plutons from smallest to largest. | 1. Stocks 2. Laccoliths 3. Batholiths |
| True or False: THe temperature of rocks rise at a constant 72 degrees F, with depth to the center of the earth. | False |
| Why is a volcano an extrusive igneous feature rather than an intrusive feature? | Because it forms on top of the earth's crust. |
| What is the Pacific ring of fire? | IT is the belt of volcanoes that surrounds most of the pacific ocean. |
| What is the most common type of volcano? | Strato-Volcano |
| Sills, Dikes, and Batholiths are examples of what kind of volcanoism? | Intrusive volcanoism |
| What is Pahoehoe? | Lava with a smooth, wrinkled surface |
| What is Lahar? | A volcanic mudslide caused by melted snow |
| What is Fuarles? | Vents in the ground |
| WHat is Tephar? | A layer of loose pyroclastic material and an ash covering the ground. |
| WHat do the number and extent of volacanoes and flood basalt zones indicate about conditions during the flood? | That the earth must have been not only completely devastated by the flood, but also a problematic place due to the tectonic and volcanic activity. |
| True or False: A glowing avalanche is a downhill rush of hot, volcanic gasses carrying volcanic rock and cinders. | True |
| What are the 3 general categories of volcanoes? | Shield Cynder Cones Strato Volcanoes |
| What are the 3 types of volcano activity? | Active Dormant Extinct |
| True or False: Most volcanoes erupt from a magma chamber relatively near the earth's surface. | True |
| True or False: Flowing lava is the most dangerous hazard from volcanoes. | False (The gasses, rocks and ask and extreme heat are worse) |
| True or False: The term "pyroclastic" refers to all the different types of solid volcanic emissions | True |
| True or False: Cinder cones are among the largest volcanoes in the world. | False (They are considered the widest, not the largest) |
Created by:
Russman