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Earth's Structure
Vocabulary
| Question | Answer |
|---|---|
| Earth's innermost layer | core |
| Earth's hard outermost layer | crust |
| Earth's hot, soft liquid layer | mantle |
| large rigid pieces of rock that constantly move | plates |
| The theory that says that Earth’s continents are moving and were at one time a single landmass called Pangaea | continental drift |
| The place where two tectonic plates meet and interact | plate boundary |
| The currents of rising hot liquid and sinking cool liquid that occurs in the Earth’s mantle | convection currents |
| The theory that states that Earth’s surface is made up of moving plates | plate tectonics |
| when two plates collide and move toward each other | convergent boundary |
| when two plates move away from each other | divergent boundary |
| when the more dense plate sinks below the less dense plate | subduction |
| when two plates slide back and forth | transform boundary |
| these are created when plates move or slip | earthquakes |