Module 2 Vocab

2. The branch of science concerned with earthquakes and related studies.
4. Any organism that requires oxygen.
7. A solid piece of debris from an object such as a comet, asteroid, or meteoroid.
9. When two or more species affect each other's evolution through natural selection.
11. The process of transferring heat through air or liquid currents.
13. The process by which an unstable atomic nucleus loses energy by radiation.
15. The study of the forms and features of land surfaces.
17. Any organism that does not require oxygen.
20. All the non-living factors present in an ecosystem.

1. A technique which is used to date materials such as rocks or carbon.
3. The study of prehistoric Earth's magnetic fields recorded in rocks, sediment, or archeological materials.
5. A wave of energy that is generated by an earthquake.
6. Occurs when two tectonic plates move away from each other.
8. The science of determining the relative order of past events, without necessarily determining their absolute age.
10. A type of atom, the smallest unit of matter.
12. The time required for a quantity to reduce to half of its initial value.
14. The age of a natural material in years.
16. Where tectonic plates collide and one plate is thrust beneath another.
18. A large stable block of the earth's crust.
19. All the living factors present in an ecosystem.