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Science test 5
| Question | Answer |
|---|---|
| Earthquakes sometimes cause monstrous waves called _____ | tsunamis |
| a break that appears at the boundary between two moving masses of rock is known as ? | fault |
| the point underground where an earthquake begins is called | focus |
| the place at ground level that is directly above the focus of an earthquake | epicenter |
| any trembling or shaking of the earth's crust | earthquake |
| the strength of an earthquake is called the | magnitude |
| this occurs when natural ACIDS slowly eat into a rock, breaking it apart | Chemical weathering |
| the temperature ________ with depth | increases |
| a _______ ___________ is created when trapped gases blast through the earth's surface | vent |
| a ______ allows molten rock and hot gases to ESCAPE from within the earth | volcano |
| scientist who study the earth | geologists |
| the PROCESS by which new soil is formed as rocks crumble ad break into smaller pieces | weathering |
| the boundary between the earth's crust and it's mantle | Moho |
| the underwater mountain ranges | mid-oceanic ridges |
| the study of EARTHQUAKES | seismology |
| a volcano that has been active at some time in recorded history but has not had a recent eruption | dormant |
| a volcano that produces lava fountains or fire curtains | Hawaiian |
| a volcano characaterized by hot clouds of gas and dust that it expels | Plinian |
| a volocano that has erupted recently | active |
| a volocano that has not erupted in recorded history | extinct |
| magma that reaches the earth surface is called | lava |
| running along the edge of the pacific ocean the ______ is named for its many volcanos | ring of fire |
| a depression found at the top of a volcano is called | crater |
| holes or cracks which serve as escape vents for underground gases | fumaroles |
| smaller fragments of molten rock that solidify almost instantly | tephra |
| - formed from large amounts of very fluid lava that built up gradually - the Hawaiian Islands were formed by this very little lava | Shield Volcano |
| - formed by eruptions of mostly tephra and very little lava - Paricutin is an example | cinder cone volcano |
| -Formed by alternating layers of tephra and lava - Mt. St. Helens is an example | Composite |
| crust, mantle, core | 3 layers of the Earth |
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