RELATIVE DATING, GEOLOGIC TIME AND ABSOLUTE DATING
1. What is relative dating? How do you sequence geologic events relatively?
2. Explain the principles of original horizontality, superposition, cross-cutting relationships, faunal succession
and inclusions.
3. How do fossils help determine relative ages? What are index fossils?
4. How do scientists correlate rock layers in different cross sections? What is a pinch out?
5. What is absolute dating? What is the best way to measure geologic time?
6. What is a half-life? How do you compute age from half-life?
7. What is an isotope? What do the terms “parent” and “daughter” mean?
8. How many half-lives have passed if there is a 1:1 parent-daughter ratio? 1:3? 1:7?
9. What is the geologic time scale? How is the time scale organized? How old is the Earth?
10. What are the four eras, their relative lengths and what are they known for? How are eras divided?
11. Review the basic geology of the Denver Basin as seen on the field trip and discussed in the follow-up.
RELATIVE DATING, GEOLOGIC TIME AND ABSOLUTE DATING
1. What is relative dating? How do you sequence geologic events relatively?
2. Explain the principles of original horizontality, superposition, cross-cutting relationships, faunal succession
and inclusions.
3. How do fossils help determine relative ages? What are index fossils?
4. How do scientists correlate rock layers in different cross sections? What is a pinch out?
5. What is absolute dating? What is the best way to measure geologic time?
6. What is a half-life? How do you compute age from half-life?
7. What is an isotope? What do the terms “parent” and “daughter” mean?
8. How many half-lives have passed if there is a 1:1 parent-daughter ratio? 1:3? 1:7?
9. What is the geologic time scale? How is the time scale organized? How old is the Earth?
10. What are the four eras, their relative lengths and what are they known for? How are eras divided?
11. Review the basic geology of the Denver Basin as seen on the field trip and discussed in the follow-up.
RELATIVE DATING, GEOLOGIC TIME AND ABSOLUTE DATING
1. What is relative dating? How do you sequence geologic events relatively?
2. Explain the principles of original horizontality, superposition, cross-cutting relationships, faunal succession
and inclusions.
3. How do fossils help determine relative ages? What are index fossils?
4. How do scientists correlate rock layers in different cross sections? What is a pinch out?
5. What is absolute dating? What is the best way to measure geologic time?
6. What is a half-life? How do you compute age from half-life?
7. What is an isotope? What do the terms “parent” and “daughter” mean?
8. How many half-lives have passed if there is a 1:1 parent-daughter ratio? 1:3? 1:7?
9. What is the geologic time scale? How is the time scale organized? How old is the Earth?
10. What are the four eras, their relative lengths and what are they known for? How are eras divided?
11. Review the basic geology of the Denver Basin as seen on the field trip and discussed in the follow-up.