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chapter 10
| Question | Answer |
|---|---|
| Define Relative Dating: | age of rocks and geologic features compared to other rocks and features nearby |
| The relative age of lower layers of rock is ___________________ than the relative age of rocks above them. | older |
| The principle of ______________________ states that in undisturbed rock layers, the oldest rocks are on the bottom. | superposition |
| According to the principle of _____________________________ , most rock-forming material was deposited in horizontal layers. | original horizontality-first flat |
| The principle of __________________________ states that sediments are deposited in large, continuous sheets in all lateral directions. | lateral continuity |
| What are the 3 principles of relative age dating? | Superposition, original horizontality and lateral continuity |
| Matching rocks and fossils from different locations is called____________________. | corrolation |
| Corrolation helps scientists determine the ______________________________________ history of an area. | ancient |
| ________ ____________ are often used to learn the relative ages of rock layers that are far apart from each other. | index fossils |
| If two formations contain similar fossils, the formations are probably about the same _____________________. | age |
| Fossils that are useful for determining relative age are from species that were _________________ and existed for a ____________period of time in many different areas on Earth. | abundant, short |
| What kind of fossils are useful for determining relative and are from species that were abundant and existed for a short period of time? | index fossils |
| Rocks can provide clues to the _________________________. | past |
| What is a paleontologist is what? | a person who study's fossils |
| 450 million years ago (mya) a shallow ocean covered much of ______________ __________________________. | North America |
| Fossils show that Earth's climate has _______________________ many times in the past. | changed |
| What are 3 things you know about fossils? | they are old, they are left over body of a long dead organ, they are very delicate |
| Fossils are the _____________________________________________ of ancient living things. | the remains or traces |
Created by:
jacksterner