Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
science chapter 6
fossil
| Question | Answer |
|---|---|
| such as erosion and deposition—remain uniform, or do not change, over time | uniformitarianism |
| principle that states that all geologic change occurs suddenly | catastrophism |
| science involved with the study of past life | paleontology |
| principle that states that younger rocks lie above older rocks in undisturbed sequences | superposition |
| Determining whether an object or event is older or younger than other objects or events | relative dating |
| ideal sequence of rock layers that contains all the known fossils and rock formations on Earth, arranged from oldest to youngest | geologic column |
| Those are found where part of a sequence of parallel rock layers is missing | disconformities |
| Those are found where horizontal sedimentary rock layers lie on top of an eroded surface of older intrusive igneous or metamorphic rock | nonconformities |
| Those are found between horizontal layers of sedimentary rock and layers of rock that have been tilted or folded | angular nonconformities |
| Determining the order of events that led to such a sequence is like piecing together a jigsaw puzzle. What helps geologists piece together ? | knowledge of the events that disturb or remove rock-layer sequences |
| ideal sequence of rock layers that contains all the known fossils and rock formations on Earth, arranged from oldest to youngest. | geologic column |
| process of establishing the age of an object by determining the number of years it has existed | absolute dating |
| Atoms of the same element that have the same number of protons but have different numbers of neutrons | isotopes |
| Radioactive isotopes tend to break down into stable isotopes of the same or other elements in a process | radioactive decay |
| Determining the absolute age of a sample, based on the ratio of parent material to daughter material | radiometric dating |
| time that it takes one-half of a radioactive sample to decay | half-life |
| remains or physical evidence of an organism preserved by geologic processes | fossil |
| Describe five ways that different types of fossils form | fossils in rocks, fossils in amber, petrifaction, in asphalt, frozen fossils |
| List three types of fossils that are not part of organisms | trace fossils, molds, and cast |
Created by:
rollins