Across
- 2. Earth is believed to be about 4.6 _______years old (p.166)
- 5. the only liquid layer of Earth(p.171)
- 7. can travel through Earth’s core(p.173)
- 11. separation based on density (p.168)
- 12. outermost physical layer of Earth(p.171)
- 14. the middle layer in the five layer model (p.171)
- 15. the thicker type of crust (p.170)
- 16. most dense layer in three layer model (p.170)
- 17. the force that pulls matter towards Earth's center(p.167)
Down
- 1. energy released by an earthquake (p.172) (2 words, no space)
- 3. the denser type of crust (p.170)
- 4. a rock from Earth's mantle(p.175)
- 6. outer layer in 3-layer model of Earth (p.170)
- 8. middle layer in three layer model of Earth (p.170)
- 9. Earth's three layer model is based on _____ (p.170)
- 10. travel only through solids(p.173)
- 13. made of solid iron and nickel (p.171)