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Rocks
5th grade
| Term | Definition |
|---|---|
| 4.6 billion years old | the approximate age of Earth |
| sedimentary rock | rock formed by layers of sediment cemented together |
| igneous rock | rock formed from melted/cooled lava and magma |
| metamorphic rock | rock changed by heat and pressure |
| fossils | provide information and conditions of the past |
| crust, mantle, outer core, and inner core | the four layers of Earth |
| convergent boundaries | tectonic plates that move together |
| divergent boundaries | tectonic plates that move apart |
| transform boundaries (strike-slip or sliding boundaries) | tectonic plates that slip past each other horizontally |
| weathering | the breaking down of rocks |
| erosion | the movement of sediments by water and wind |
| deposition | sediments being deposited in new locations |
| sediments | broken down pieces of rock |
Created by:
jrt66