Term
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Definition
| a vent or fissure in Earth's surface through which melted rock and gases pass |
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Term
| Where do volcanoes commonly occur? |
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Definition
Convergent boundaries
Divergent boundaries
Hot spots |
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Term
What are Hot Spots?
Provide an example |
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Definition
Volcanic active area, located far from a tectonic plate boundary
Mauna Loa, Hawaii |
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Term
| Three ways magma can form |
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Definition
1. Increased temperature
2. Decreased pressure
3. Adding fluids |
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Term
| Negative local effects of volcanic eruptions |
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Definition
-loss of human life
-devastates wildlife habitats |
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Term
| Negative global effects of volcanic eruptions |
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Definition
-Affects Earth's climate for several years
-Volcanic ash and sulfur-rich gases are released and pushed into stratosphere |
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Term
| Positive effects of volcanic eruptions |
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Definition
-fertile soil
-renewable resource |
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Term
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Definition
| point on Earth' surface directly above an earthquake's starting point |
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Term
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Definition
| the location within Earth along a fault at which he first motion of an earthquake occurs |
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Term
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Definition
| a tool to measure ground motion from an earthquake and find the magnitude |
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Term
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Definition
| a giant ocean wave that forms after a volcanic eruption |
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Term
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Definition
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Term
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Definition
| the process of one plate sliding under another |
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Term
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Definition
| liquid rock produced under Earth's surface; igneous rock |
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Term
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Definition
| magma that flows onto Earth's surface: the rock that forms when lava forms and solidify |
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Term
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Definition
| describes magma igneous rock that is rich in magnesium and iron and is generally dark in color |
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Term
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Definition
| describes magma of igneous rock that is rich in feld spars and silica and generally light in color |
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Term
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Definition
| a mud flow that form wen volcanic ash and debris mix with water during a volcanic eruption |
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Term
| Where do earthquakes most often occur? |
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Definition
| near boundaries of tectonic plates |
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Term
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Definition
| movement or trembling of the ground that is caused by a sudden release of energy when rocks along a fault move |
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Term
| What is the Ring of Fire? |
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Definition
| The plate boundaries that surround the Pacific Ocean containing volcanoes |
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Term
| The _______ is the point on the Earth's surface directly above an earthquake's _______. |
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Definition
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Term
| What does the magnitude scale measure? |
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Definition
| the strength of an earthquakes |
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Term
| What does the Mercalli Scale measure? |
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Definition
| the intensity of an earthquake |
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Term
| _______ earthquakes occur about once a year, whereas _______ earthquakes occur thousands of times per day. |
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Definition
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Term
| What type of boundary can b found in CA and what is it called? |
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Definition
Transform boundary
San Andreas fault |
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Term
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Definition
| the sudden return of elastically deformed rock to its un-deformed shape |
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Term
Volcano type:
cinder cone
description and where found |
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Definition
-a volcano made of cinders that are blown into the air
-convergent boundary |
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Term
Volcano type:
composite
description and where found |
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Definition
-a volcano built of alternating layers of cinder and lava
-convergent boundary |
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Term
Volcano type:
shield
description and where found |
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Definition
-a gently-sloped volcano
-hot spots |
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Term
Volcano type:
mid-ocean ridge
description and where found |
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Definition
-underwater volcanic mountain
-divergent boundary |
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Term
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Definition
| this is the sudden movement of rock releases a large amount of energy that travels through the rock |
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