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Unit 7
Rocks and Fossils
| Question | Answer |
|---|---|
| What is the best way to find the age of layers of rock? | Look at the fossils found in the layers. |
| In a model with 7 rock layers, what layer would be the oldest? | The layer on the bottom. |
| In a model with 7 rock layers, what layer would be the youngest? | The layer on the top. |
| How do you know if a layer of rock is younger? | It will be the layer laid down last, which is the top layer. |
| How do you know if a layer of rock is older? | It will be the layer laid down first, which is the bottom layer. |
| What most likely cause a break in rock layers? | An earthquake. |
| What would cause a layer of rock to be missing? | Erosion |
| If 2 rock layers in different parts of the world have the same type of fossil in them, what can you infer about the rock layers? | They are probably the same age and probably had the same climate. |
| If you find an aquatic fossil in an area that has no water what can you infer about what that area was like in the past? | It was probably once covered in water. |
| If you find a terrestrial fossil in an area that is covered by water what can you infer about what that area was like in the past? | The area was probably dry land and not covered in water at one time. |
Created by:
Mrs. Furlong
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