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LMS Ch 8.1 DR
Determining Relative Age Directed Reading
Question | Answer |
---|---|
Layers of rock are called?? | Strata. |
The order of rock layers reveals?? | The relative age of the layers. |
Relative age indicates?? | That one rock layer is older than another layer. |
Although various types of rock form layers, what type of rock is commonly used by scientists to determine the relative age of rocks?? | Sedimentary Rock. |
Sedimentary Rocks form when?? | New layers of sediment are deposited on top of old layers of sediment. |
Layers of compressed and hardened sediments are called?? | Beds. |
What is a bedding plane?? | A boundary between rock beds. |
The law of superposition helps scientists determine the?? | Relative Age of a layer of sedimentary rock. |
In what kinds of layers does sedimentary rock generally form?? | Horizontal. |
What can scientists assume when sedimentary rock layers are not horizontal?? | The rock has been tilted or deformed. |