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The Birth of Rocks
Study Vocabulary for the unit test
Term | Definition |
---|---|
lava | Hot, liquid rock |
Volcanologist | scientists who study volcanos |
The Ring of Fire | groups of volcanoes surrounding the Pacific Ocean |
Basalt Rock | Dark colored lava rock |
Extinct Volcano | A volcano that does not erupt anymore |
Felsite Rock | Pale colored lava rock |
Cone volcano | taller, big exploding volcano that has felsite rock |
Shield Volcano | lower, gentle, calm erupting volcano that has basalt rock |
Thin lava | quick moving lava, basalt |
Thick lava | slow moving lava, felsite |
Root-Wedging | Seed grows in the crack of a rock. It grows roots and breaks the rock even more |
Ice-Wedging | Water freezes in the crack of a rock and breaks the rock even more |
Landslide | Rolling rock down a steep hill or mountain caused by rain and loose rocks |
Rounder rocks | Rocks found at the bottom of a mountain, smoothed as it tumbles down |
35 degrees | When land slopes more than ___, landslides can occur |
Exfoliation | The process by which outer rock layers are stripped away |
Geologist | Are scientists who study rocks, minerals, and other nonliving parts of the Earth |
Igneous Rock | A type of rock that forms from the cooling of molten rock at or below the surface |
Metamorphic Rock | Rock that has been changed by heat and pressure |