Create your own
teaching resources

Sign up for a free account to try! It takes less than 20 seconds

Create free account
Teacherbot 13 Dec, 23:45:05
  1. What is the difference between relative age and absolute age?
  2. Why is it impossible to know the absolute age of all rocks?
  3. How do scientists use relative age to describe the age of a rock?
  4. What is the Law of Superposition and how does it help determine relative age?
  5. How do extrusions and intrusions help determine relative age?
  6. How do faults help determine relative age?
  7. What are fossils and why are they important in determining relative age?
  8. What are index fossils and how do they help determine relative age?
  9. What is an unconformity and how does it create a gap in the geologic record?
  10. How do scientists fill in the gaps in the geologic record?
  11. What is folding and how does it affect the age of rock layers?
  12. How do geologists determine the absolute age of rocks?
  13. What is radioactive decay and how does it help determine absolute age?
  14. How do radioactive elements occur naturally in igneous rock?
  15. How does the composition of a rock change over time due to radioactive decay?
  16. What is a half-life and how is it used in radioactive dating?
  17. How does potassium-argon dating work and what types of rocks is it useful for?
  18. How does carbon-14 dating work and what types of materials is it limited to?
  19. How do scientists determine the age of a rock using radioactive or radiometric dating?
  20. Why is understanding the absolute age of rocks important in constructing a record of Earth’s history?