| A | B |
|---|
| fossils | Remains of organisms that have hardened into rock |
| rock cycle | Rocks change from one form to another |
| igneous rock | Type of rock formed from the magma heating and cooling [granite] |
| magma | Melted rock deep inside Earth |
| lava | Melted rock on the Earth's surface |
| rock | A mixture of minerals that change over time with heat and pressure |
| igneous, metamorphic, sedimentary | Name the 3 groups of rocks |
| metamorphic rock | Type of rock caused by great heat and pressure [gneiss, slate] |
| sedimentary rock | Type of rock formed by breaking apart, settles in layers [ limestone, sandstone] |
| sediment | Small pieces of rock formed by weathering and erosion |
| weathering | A physical and a chemical process of breaking down rocks |
| acid rain | Chemical process of weathering rocks |
| ice and water | Physical process of weathering rocks |
| erosion | The moving of weathered rock and soil by wind, ice, or water |
| color, grain size, textural features | 3 properties of rock |
| Crust, Mantle, Outer core, Inner core | The 4 layers of Earth |
| crust | Outer solid rock layer of Earth, forms continents |
| mantle | Layer made of melted rock [lumpy gravy] next to crust, largest layer |
| outer core | Layer made of liquid iron and nickel |
| inner core | Layer made of solid iron and nickel, under extreme heat and pressure |
| plates | Huge moveable segments, form the continents and ocean floor, float on magma |
| plate tectonics | The movement of plates on the Earth's crust; forms trenches and mountains |
| faults | The edges of plates; where earthquakes and volcanoes occur |
| convergent plate boundaries | Edges of plates collide [push together] |
| divergent plate boundaries | Edges of plates pull apart |
| transform plate boundaries | Edges of plates slide past one another |
