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Science Vocab
Term | Definition |
---|---|
Uniformitarianism | When changes in the Earth happens slowly. |
Catastrophism | When changes in the Earth happens very quickly. |
Modern Geology | Uniformitarianism and Catastrophism combined. |
Extinction | When something is no longer in existence. |
Paleontology | The study of ancient life, such as fossils. |
Fossils | Remains or traces, like teeth marks, from years ago. |
Unconformities | The lack of deposition or erosion. |
Superposition | The idea that younger rock layers lay above older rock layers. |
Relative Dating | Using superposition to figure out whether a rock is older or younger than the layers around it. |
Absolute Dating | Using radiometric dating to determine the exact age of a rock. |
Radiometric Dating | The method used to find the exact age of a rock. |
Folding | When layers bend under pressure. |
Tilting | When forces cause layers to become slanted. |
Intrusion | A crack in the earth, that causes magma to seep out and form an intrusive igneous rock. |