1. Relative Age - the age on one rock layer (or the fossils it holds) compared to any other layers
2. Superposition- one the principles of geology scientists that are used to determine the relative ages of rock strata, or layers
3. Original Horizontality- all kinds of rock layers that are layed down to the ground originally horzontally can be deformed eventually
4. Cross-cutting relationships- principle of geology that states that the geologic feture which cuts is the younger out the 2 features
5. Inclusions- any kind of a material that is trapped inside of a material as the material forms
5.1. Magnet- a metalic piece that can stick to things.
5.2. Ferromagnetic Elements - a kind of magnetism that accosiated with iron
5.3. Magnetic Force - attraction / repulsion bettwen electrically particles because of the motion
5.4. magnetic poles- region at each end of a magnet where an external field is strong
5.5. Magnetic fields - region around magnetic material or moving an electric charge within a force of magnesium
5.6. Compasses - a device that points the direction something is
5.7. Magnetic Strength - measurement of strenght of magnetic field in given area of that field
5.8. Magnetic Potential Energy - stored enrgy inside of a system of megnets as result of exertion of megnetic force on each other
5.9. Magnetic Domain - region in which magnetic fields of atoms are together are grouped and aligned
5.10. Nonmagnetic Materials -materials that aren't attracted by magnet
5.11. Magnetic Materials - materials that can be megnetised in an easy way and can be used to make magnet
5.12. Temporary Magnet - magnets made of soft metals that are megnetised when exposed to a permanent megnatic field
5.13. Permanent Magnets - magnet retains its magnetic properties in absence of including field
6. Mass Extinctions- big things that are extinct
7. https://www.youtube.com/watch?v=5f6Em3-xtNs
8. Angled unconformity- an uncomformity of horizontally parallel strata of sedimentary rock are deposited on tilted and eroded layers
9. noncomformity- sometihng that causes the grow wher eht esediments had been deopisted right above a eroded surface of igneous or metamorphic rocks
10. Key Bed- bed or rock strata that are reayd to be disstinguable
11. https://www.youtube.com/watch?v=rWp5ZpJAIAE
12. Uniformitarianism- theory that changes inside of the earth's crust during a geologic history that had result from an action of continuous and uniform processes
13. Absolute Age- numeric age of layer rocks and fossils
14. Relative Age Dating- we determien in which things are younger or older based on their realtionships
15. Sediment- solid material that had been moved of deposited inside of a new location
16. Strata- horizontal layers, or beds that presend in most sedimentary rocks
17. The fossil record- group of fossils that had been tested out also arranged chronologically and in taxonomic order
18. https://www.youtube.com/watch?v=0HCHX2gvyg0
19. Unconformities- a break in time in an otherwise continuious rock record
20. Disconformity- the surface of a division between parallel rock strata, indicating interruption of sedimentation
21. Correlation- a staasticahal measure that indicates the extent to which 2 or more variables rise up in relation to each other
22. Geologic Time Scale - divding up the history Geologic Time Scale
