| A | B |
|---|
| Earth Science | the term for the knowledge about Earth and its place in the universe |
| Geologists | study the chemical and physical properties of rock, the material that forms Earth's hard surface |
| Topography | shape of the land, determined by the area's elevation, relief and landforms |
| elevation | the height above sea level of a point on the Earth's surface |
| relief | the difference in elevation between the highest and lowest parts of an area |
| landform | a feature of toography formed by the processes that shaped Earth's surface |
| plain | a landform made up of flat or gently rolling land with a low relief |
| mountain | a landform with high elevation and high relief |
| plateau | a landform that has high elevation and a more or less level surface |
| Lithosphere | the Earth's solid, rocky outer layer |
| atmosphere | the outermost sphere, mixture of gases that surrounds the planet |
| hydrosphere | Earth's oceans, lakes, rivers, and ice |
| biosphere | all living things |
| Core | The Earth's core is divided into two layers: the solid inner core and the hot, liquid outer core |
| mantle | thick hot solid layer surrounding the core |
| crust | thin, outer layer of the lithosphere that forms the Earth's surface |
