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Earth Movement Vocab
Earth Movements Defintions Vocabulary 5th grade science
| Question | Answer |
|---|---|
| cast fossil - | a fossil that forms when a mold is filled in with minerals deposited by water – a three dimensional replica of the organism |
| continent - | one of the seven large masses of earth (Asia, Africa, Australia, Europe, North America, South America, and Antarctica) |
| continental crust - | the layer of crust that contains the continents |
| core – | the earth’s innermost layer. |
| crust – | the thin, rocky, outermost layer of the earth. |
| earthquake – | vibrations in the earth’s crust caused by the sudden release of energy due to shifting rocks along a fault. |
| erupt – | to break through |
| fault – | a break or crack in the earth’s crust where two plates slide past each other. |
| fossil – | the remains of an organism that lived long ago, found preserved in rock preserved in rock. |
| geology – | the study of earth and its history. |
| glacier – | a huge, slow-moving mass of ice. |
| inner core – | the innermost layer of the earth which is made of solid metals (high temperatures and high pressure). |
| island – | land mass surrounded by water. |
| lava – | magma that comes out of a volcano. |
| lithosphere – | consists of the crust and upper-part of the mantle that is separated into the tectonic plates. |
| magma – | the melted rock that makes up the mantle. |
| mantle – | the thick fluid layer of earth on which the crust floats. |
| model – | a smaller or larger version of an object used to represent the actual object. |
| mold fossil – | an imprint left in a rock after the remains of an organism have disintegrated. |
| ocean floor – | the surface of the earth’s crust beneath the ocean. |
| mid-ocean ridge – | a mountain range on the ocean floor. |
| ocean-floor spreading – | the process by which hot magma from the mantle wells up in the boundary between two oceanic plates as they move away from each other – it results in the creation of new crust. |
| oceanic crust – | the layer of crust beneath the oceans. |
| Pangaea – | the name for the super-continent that scientists believe existed about 200 million years ago, in which all the present continents were once joined. |
| plate – | a section of the earth’s crust. |
| Ring of Fire – | a region of the earth in which many volcanoes and earthquakes occur (encircling the Pacific). |
| subduction – | the process in which two plates collide and the edge of the dense plate sinks beneath the edge of the less dense plate, then melting back into the mantle. |
| trench – | a deep, narrow valley in the ocean floor where subduction takes place. |
| vibrations – | a rapid back and forth movements. |
| volcano – | an opening in the earth’s crust through which melted rock reaches thenearth’s surface. |
Created by:
jim65taylor
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