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Ch 28 int sc
The Changing Earth
| Question | Answer |
|---|---|
| What is asthenosphere? | The portion of the upper mantle beneath the rigid lithosphere where rock flows. |
| What is continential drift? | A theory stating that pieces of pangaea moved apart to form the senve continents on Earth. |
| What is cross-cutting relationships? | An idea stating that a vein of rock that intersects layers of rock is younger thatn the layers. |
| What is epicenter? | A point on the Earth's surface that is directly above the focus of an earthquake and where the seisic waves reach first. |
| What is fault? | A break or crack in the Earth's crust where two pieces of the crust become offset. |
| What is faunal succession? | An idea stating that fossils can be used to identify the relative age of layers of a rock formation. |
| What is focus? | The place underground where the seismic waves of an earthquake originate. |
| What is geology? | The study of rocks and materials that make up a celestial body such as Eartrh and the processes that shape it. |
| What is inclusions? | Rock pieces found within another rock that are older than the surrounding rock. |
| What is lateral continuity? | An idea stating that the layers of sediment extend in all directions when they form and before they become rock layers. |
| What is lithosphere? | A lahyer of Earth that includes the crust and upper mantle. |
| What is original horizontally? | An idea stating that sediments settling out from bodies of water are deposited hkorizontally or neary horizontally in layers that lie parallel or nearly parallel to Earth's surface. |
| What is paleontology? | the study and indentification of fossils. |
| What is Pangaea? | A proposed former supercontinent supposedly composed of all the continental crust of Earth and later fragmentexd by drift into Laurasia and Gondwana. |
| What is plate tectonics? | A theory stating that giant pieces of Earth's lithosphere move and interactr on the surface, resulting, for example, in land formations, earthquakes, and volcanoes. |
| What is P-wave? | A primary seismic wave that pushes and pulls in the same directions that it travels through Earth. This kind of body wave is faster than an S-wave. |
| What is realtive dating? | A teechnigue used to put events in the order that they have happened. |
| What is sea-floor spreading? | Desscribes how the sea floor on either side of a mid=ocean ridge moves away from the ridge and creates a rise or valley. |
| What is seismic wave? | A wave that results from an earthquake. There are two kinds of seismic waves(P and S waves) that travel through Earth and surface waves that travel along Earth's surface. |
| What is subduction? | A process occurring at the convergent plate boundary. |
| What is superposition? | An idea stating that the bottom layer of a rock formation is older that the layer on top because the bottom layer formed first. |
| What is S-wave? | A secondary seismic wave that moves sideways or up and down perpendicular to the direction that it trav els through Earth. This kind of body wave is slower thatn a P-wave. |
| What is tsunami? | A huge wave generated by an underwater earthquake or landslide. |
Created by:
jazznsoul64
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