| Term 
 | Definition 
 
        |     a volcano that continues to erupt |  | 
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        | Term 
 | Definition 
 
        |   a volcano that has not erupted in recent years |  | 
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        | Term 
 | Definition 
 
        |   an opening in the earth's crust that spews out lava, hot ash and gases during an eruption |  | 
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        | Term 
 | Definition 
 
        |   a large amount of snow that slides down the side of the mountain |  | 
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        | Term 
 | Definition 
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        | Term 
 | Definition 
 
        |   the shaking of the earth's surface that is caused by the sudden movement of the earth's crust |  | 
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        | Term 
 | Definition 
 
        |   removal of rock and soil by wind and/or water |  | 
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        | Term 
 | Definition 
 
        |     a crack in the earth's crust |  | 
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        | Term 
 | Definition 
 
        |     a feature of the earth's surface |  | 
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        | Term 
 | Definition 
 
        |     a large amount of dry soil and rock that slides down a steep slope |  | 
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        | Term 
 | Definition 
 
        |     a large amount of wet soil and rock that slides down a steep slope |  | 
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        | Term 
 | Definition 
 
        |   a series of large ocean waves that are caused by a volcanic eruption or earthquake underwater |  | 
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