Across
- 1. this part of the earth is made up of iron and nickel
- 3. these are the fastest waves to leave the earthquake
- 6. in 1880 the _____________ was invented
- 11. another name for S waves
- 12. these are the earthquakes that are not near plate boundaries
- 13. the earth's mantle is made up of this mineral
Down
- 2. geologists can determine where this is by looking at different seismograms
- 4. thees are the waves that cause the most damage in erathquakes
- 5. P and S are type of _____________ waves
- 6. what was developed in the 1970's to explore the ecean floor
- 7. is a record of the shaking of an earthquake
- 8. this liquid stops the S waves from going through the earth
- 9. this country is not near any plate boundaries
- 10. convection currents cause continental ___________