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Ch. 6 study guide
(this is for science)
| Question | Answer |
|---|---|
| Who are the scientist that study fossils? Why do they study fossils? | paleontologist study fossils. They study fossils so they can know the history of the Earth, and the organisms that have inhabited our planet |
| What is the the difference between uniformitarianism and catastrophism? | uniformitarianism is a process that changes our Earth very slowly, catastrophism is a sudden process that can kill millions of organisms. |
| Which direction do sedimentary rock layers lay? What happens to land during folding | They go horizontal (left to right or right to left). during folding, rock layers are bent underneath the surface= |
| What is the age of faults and intrusions compared to the rocks around them | faults and intrusions are always younger than the rocks around them. |
| What is the difference between intrusion, extrusion, and faults | Intrusion: When magma or rock INTRUDES into other rocks extrusion: When magma or rock breaks through the surface Fault: a crack in the earths crust |
| What type of age dose the law of superposition help determine. | the law of superposition helps us decide relative dating |
| What kind of information dose an unconformity provide | an unconformity provides scientist that something happened to the layer |
| What is the difference between absolute and relative age? | absolute is the exact age of a rock (ex: this rock is 123456789 years old) relative is the age compared to rocks around it (ex: this rock is older than this rock) |
| What is a Fossil? How are they formed (explain steps) | a fossil is the remains of an organism. a fossil is formed by first, an organism dying then, it's bones are cover with sediment and then, wola |
| What kind of information do trace fossils provide scientist? Give eanxample | trace fossils provide how big the animal was, if it traveled in groups, or if it ran/ walked fast. an example of a trace fossils is a burrow. Burrows are shelters made by animals that bury in sediment. |
| What part of an organism becomes a fossils, what happens to the rest of the organism | the bones of an organism become a fossil. the rest of the organism decaes |
| what are index fossils? what are they used for? what is an example? | an index fossil is an animal or plant preserved in rock inside of the earth.they are used for dating and correlating the strata in which it is found. ex: ammonites |
| what is the purpose of the Geologic time scale? | the geologic time scale divides our earth into separate sections |
| list the intervals of time on the geologic time scale form largest to smallest | Eon, Era, Period, Epoch |
| why did mammals begin to thrive | because most mammals survived the meteor that killed the dinosaurs and so they were one of the few types of animals alive |
| What era is the present day apart of? | cenozoic |
| what is the difference between a species going extinct and a mass extinction | a species going extinct is when all animals of that species DIE and a mass extinction is when multiple animals, and sometimes multiple species, go extinct. |
| list the eras starting from the most recent | Paleozoic, mesozoic, and cenozic |
| what do most scientist believe cause the extinction of the dinosaurs | most scientist believe that a meteor hit the earth and caused the dinosaurs to go extict |
| what marked the end of the Mesozoic era and the begging of the cenozoic | the meteor that hit the earth |
| what dose it mean when an organism evolve over time | it means that an orginism will adapt to it's environment so i can survive better |
Created by:
Brandon_is_cool
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