earth systems

1. Petroleum,natural gas,coal, and remains of plants and animals
5. Water held underground in the soil in deep reservoirs
7. The study of earth
10. Below the lithosphere. hotter and more fluid part of the mantle
11. Forms under extreme heat and pressure. appears twisted
13. When heat, pressure, cooling, melting, and weathering cause rocks to change from one type to another over time
14. Group of animals that occupy a certain area
15. Still in existence, surviving species
16. The study of earthquakes and related phenomena
17. Compress or squeeze through solids and liquid. travel faster than S

2. The outer part of the earth, including the crust and upper mantle
3. Move side to side through only solids. travel slower than P
4. Forms when molten rock crystallizes and solidifies. appears glassy.
6. Forms from pre-existing rock and fossils. appears layered
8. No longer existence
9. The movement caused within a fluid when the hotter, less dense material rises, and colder, dense material to sink
11. A solid inorganic material found in nature
12. The lower part of