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Rocks and Volcanoes
CA Earth Science Standards 3C, 3E and 3F
Question | Answer |
---|---|
viscosity | stickiness |
igneous rock | lava or magma cooled down |
lava | molten rock on the earth's surface |
magma | molten rock under the earth's surface |
shield volcano | gently sloped volcano oozing basaltic lava |
cinder cone volcano | steep sided volcano exploding granitic lava |
hot spot | an area in the mantle hotter than usual, creating volcanoes far from plate boundaries |
sedimentary rock | formed from cementation layered sediment |
metamorphic rock | formed from heat and pressure on pre-existing rocks |
fragmental structure | rock structure that breaks apart easily |
fossil | evidence in a rock of life in the past |
sediment | pieces of rock |
composite volcano | erupts explosively as well as with flowing lava |