Across
- 3. the layer of earth we live on
- 5. plate movement where one tectonic plate goes under another plate
- 6. pulling apart of two tectonic plates
- 7. the crust and upper mantle
- 9. fast moving, very hot, dark cloud of volcanic ash, gas, and rocks
- 14. a crack in the earth's crust
- 15. means "all lands"; a supercontinent of all the continents making one big land mass
- 17. this machine measures seismic waves
- 20. shaking of the earth's surface
- 23. the layer of earth as hot as the sun;a solid ball of iron
- 24. area around the pacific plate with most of the earth's volcanoes and earthquakes
- 25. Alfred Wegener saw that the continents looked like they fit together like ____ pieces.
- 27. type of volcano made of volcanic ash, volcanic clinkers, or volcanic cinder
Down
- 1. type of volcano also called a stratovolcano;cone shaped with steep sides
- 2. inside the earth where the earth moves or breaks;start of seismic waves
- 4. type of volcano in the shape of a large, round dome
- 8. a surface wave that rolls the earth's surface during an earthquake
- 10. coming together of two tectonic plates
- 11. body waves; the second waves that come from the focus of an earthquake
- 12. the largest layer of the earth
- 13. viscous, slow moving lava
- 16. a surface wave the moves the earth side to side during an earthquake
- 18. a giant wave caused by under ocean earthquakes or volcano eruptions
- 19. the layer of earth made of melted iron and nickel
- 21. fast moving lava with clinkers
- 22. sliding boundary of two tectonic plates
- 25. body waves;the first waves that come from the focus of an earthquake
- 26. the study of the earth