Science Vocabulary

2. A zone of fractures between two blocks of rock
4. The process where Earth components worn away and moved by natural forces like wind and water
7. Used to arrange geological events, and the rocks they leave behind (In sequence)
12. The process of determining an age on a specified chronology
13. A boundary between rocks caused by periods of erosion
16. Cylinders of ice drilled from ice sheets and glaciers
17. Weathering, The process where rocks are broken down by physical force
19. Movement inside the Earth where rocks bend due to compression from other rocks
20. Forcing molten rock into fissures
22. The process where rocks are broken down by chemical reactions

1. Formed when rocks are exposed to high heat and pressure
3. The idea that Earth has always changed in uniform ways and that the present is is the key to the past
5. The calendar for events in Earth history
6. Rocks that are formed when pre-existing rocks or pieces of once living organisms in layers and squashed together over time
8. A scientists that studies the history of the Earth through rocks and rock formations
9. An animal or plant preserved in the rock record of the Earth used to define and identify geologic periods
10. A technique used to determine the age of materials like rocks
11. States that each layer of rock is older than the one above it
14. The process where rocks are continuously transformed between three types of rock
15. Rock formed when molten rock crystallizes and solidifies
18. The time taken for something to halve its quantity
21. Substances that are formed naturally in the Earth