| A | B |
|---|
| Crust | Earth's thinnest outer layer. It includes the land that makes up the continents as well as the land under the oceans. |
| Mantle | The rock layer below the crust. The upper parts are so hot that the rock can flow. |
| Outer Core | This part of the the earth is liquid and made mostly of iron and nickel. |
| Inner Core | Although this part of the earth is made mostly of iron and nickel, it is solid because there is so much pressure on it. It is almost as hot as the surface of the sun. |
| Plates | Earth's crust and upper mantle are broken into large slabs of rock. |
| Plates | These move on a layer of the mangle that can flow like taffy. |
| Mountain chains | When two land plates meet the edges crush and fold as one is pushed down under the other, forming ____. |
| Islands or Volcanic Mountains | When a land plate and a ocean plate or two ocean plates meet these can form. |
| Earthquake | THe shaking of Earth's surface caused by movement of the rock in the crust. |
| Volcano | A mountain that forms as lava flows through a crack onto the Earth's surface. |
| Erosion | The process of moving sediment from one place to another. |
| Glacier | A large, moving block of ice. |
| Weathering | The breaking down of rocks on Earth's surface into smaller pieces. |
| Fossil | The remains of traces of a plant or animal that lived long ago. |
| Deposition | The dropping of bits of rocks and soil by a river as it flows. |
| Two types of weathering | physical & chemical |
| Four types of physical weathering | water, ice, living things, & wind |
| Three causes of erosion | water, wind, & glaciers |
| Glaciers | Can change the shape of landforms by picking up rocks and soil as they slowly move over the land. |
| The four layers of the earth from the center to the surface | Inner core, outer core, mantle, crust |
| Four layers of the earth from the surface to the center | crust, mantle, outer core, inner core |
| Plates | The earth's crust and mantle are broken into large slabs of rock. |
| Plates | Move on a layer of the mantle. |
| Mantle | Plates move on it and it flows like taffy. |
| Mantle | Contains hot, molten rock called magma. |
| Fault | A weakness in the rock strata that can shift and create an earthquake. |
| Wind can change the earth's surface by... | It moves soil and sand and can make pits or grooves in the rocks surface. |
| Earthquake | What may happen when two plates collide. |
| Wind can... | Reshape the earth by depositing and forming dunes. |
| When two land plates push against each other. | Mountains form |
| Fossil | 1. a living thing must die 2. sediment covers it 3. sediment turns to rock 4. the rock saves the shape of the object |
