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Science Topic 8 Lesson 1 😭
Terms in this set (10)
Geologist can describe the age of a rock by comparing layers and position. this process is known as
What does the law of super position indicate about a rocks age?
Older rocks at bottom. Younger rocks at top
Three ways to determine the relative age of rocks
- Law of super position
- igneous extrusion
Is preserved remains or traces of living things
Index fossils are widely distributed but we're not around long so they show up in very few layers. This helps determine the rocks what?
During radioactive decay atoms of one element break down into another more stable element. This type of element has a constant rate of decay that is called it's what
What is used to determine the age of fossils?
What is the difference between gradualism and punctuated equilibrium?
Punctuated equilibrium is a fast change and gradualism is a gradual change
What isotope of carbon is used to determine the decay of living things?
Carbon- 14 Dating
What's the difference between relative age and absolute age?
Relative age is the age of rocks compared to other rocks and absolute age is the age of the rock.
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