1. What is relative dating? (hint: not when two cousins go on a date) Relative dating is the process by which rocks are placed in their proper sequence or order; only the chronological order of events is determined, no the absolute age in years.
2. When would a geologist use radiometric dating? Geologists would use radiometric dating when rocks are 75,000 years or older. They would us radiometric dating when they want to find the absolute age of rocks and minerals.
3. When would a geologist use radiocarbon dating? A geologist would use radiocarbon dating when rocks are 75,000 and younger. They compare the amount of Caron 14 to Carbon 12 to determines the age of a rock or mineral.
4. Explain how you can use tree rings to date and study the recent past? (see p. 351) You can study the rings on a tree by seeing how many rings it has. If it has a lot of rings, it is old. Another way is the insects found in the sap of the tree.
5. What is half-life? Half-life is the time required for one half of the atoms of a radioactive substance to decay.
6. Explain how today's lab showed half-life. It shows half-life because when you would shake the pennies, some of them turn over and some of them don't, and that shows the parent material changing into the daughter material.
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