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Geologic Unit
| Question | Answer |
|---|---|
| Uniformitarianism | A principle that geologic processes that happened in the past can be explained by current geologic processes. |
| Trace Fossil | A fossilized structure such as a footprint or a coprolite, that formed in sedimentary rock by animal activity or within soft sediment |
| Fossil | The trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock. |
| Climate | The weather conditions in an area over a long period of time. |
| Ice Core | A long cylinder of ice obtained from drilling through ice caps or ice sheets, used to study past climates. |
| How old is the Earth? | 4.6 billion years old. |
| What can fossil evidence show? | It can show geologic change, like igneous rock in a suburban city, and changes in life, like dinosaur fossil, and can also show what the animal was and it characteristics. |
| Where are fossils mostly found in? Where are insects found in? | Sedimentary rock. Amber |
| What are examples of trace fossils? | Footprints, Burrows, Bite marks, shallow depressions, fossilized feces, etc. |
| What type of rock is usually dug out for oil? Why? | Coal, because inside the coal are soft parts of animals that are decomposed and the carbon remains, but also when a the fossils are compressed too, and they drill it because oil=money. |
| What is permafrost? | When an animal is completely frozen, like mammoths and saber-toothed tigers. |
| Mummification | The process of completely drying out a body, and are usually found in dry areas, like deserts. |
| Fossils are always the preserved remains of organisms that lived long ago? True or False? | False |
| Components of Continental Drift? | Jigsaw like puzzle, same fossil on different continents across sea, similar rock evidence, and Glacial evidence. |
| 5 types of fossils? | Petrified Fossils, Molds and Cast, Carbon Films, Trace Fossils, Preserved remains. |
| How does carbonization happen? | The fossils soft part is completely decomposed and only the carbon traces remain. |
| How do molds and cast happen? | When a fossil is eroded deep in the Earth, the fossil mold remain, and the sediments go inside the mold, and after it is pressurized, it takes the shape of the mold. |
| Relative Dating | Determining whether an object is the same age as, older than, or younger than another object. |
| Superposition | A bunch of rock layers stacked on top each other. |
| Cross-Cutting | When a rock or fault cuts through another body of part, and the cross-section is the younger part, like a fault. |
| Uncomformity | A break in the geologic record. |
| When a river dries up ____________. When a river is flowing again____________. | The river will no longer deposited sediments; sediments will be deposited again. |
| What rock usually contain dinosaur fossils? | Sandstone |
| What has no relation of continental Drift? 1. Mosasaur fossils in Brazil and Senegal? 2. Similar rock type in Applachian and Swiss Alps . 3. Geologic evidence in India and Yemen? 4. Modern day deserts in Texas and Cairo? | 4. Deserts in Texas and Cairo |
| Why do Mosasaur fossils in Rio and Dakar prove Continental drift theory? | Those creatures could not swin in saltwater, especially for the distance. |
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