Across
- 2. Is the very slow creeping motion of Earth's solid silicate mantle caused by convection currents carrying heat from the interior to the planets surface.
- 4. A concentration of heat in the mantle of creating magma.
- 6. The point within the earth where the actual movement takes place.
- 9. It forms from the mantle and is recycled back into the mantle.
- 10. Occurs when two plates sliding past each other.
- 11. Is the proposed "supercontinent" or large land mass that began to break apart 200 million years ago to form the present continents.
- 12. Are made up of natural substances called minerals.
- 17. A seismic wave that travels across the surface of the earth as opposed through it.
- 21. Occurs when two tectonic plates move away from each other.
- 22. The other term called for Divergent Boundary.
- 24. A collision that can lead to the formation of volcanic island and island arc.
- 26. A surface seismic wave that cause horizontal shifting of the earth during an earthquake.
- 28. The downward movement of oceanic lithospheres underneath the Pihilippine Archipelago creates.
- 29. Part of the upper mantle that is made up of solid rocks that are able to flow.
- 30. Is a mineral that's a major component of continental crust.
- 32. A seismic wave that travels through the Earth rather than across its surface.
- 33. The lithosphere is broken into large pieces and called.
- 34. The boundary between the crust and mantle.
- 37. A chain of volcanoes that develop parallel to a trench.
- 39. A collision that the plate that is denser will subduct forming the subduction zone that can also lead the formation of trenches.
- 40. The wave record from a seismograph is known as.
- 41. A theory which suggests that Earth’s crust is made up of plates that interact in various ways, thus producing earthquakes, mountains, volcanoes, and other geologic features.
- 42. The fastest type of seismic waves and move in a compression and expansion type of motion.
Down
- 1. Where most of the Divergent Boundary occurs.
- 3. Underlies the oceans and is made mostly of heavy dense basalt.
- 5. Where the majority of the islands in the Philippine Archipelago are considered as part of.
- 7. The number that recording stations required to find the location of the earthquake epicenter.
- 8. A prominent linear breaks in the sea floor.
- 13. Occurs when two plates come together.
- 14. A theory that states that continents were once large area of land that broke apart and now slowly moving away from each other.
- 15. The only major tectonic plate that is mainly underwater, it is also the largest.
- 16. A collision may result to the formation of mountain ranges, mountains, volcanoes, and high plateau.
- 18. Is the thin, outer layer of the earth.
- 19. Materials tends to sink while less dense materials tends to float.
- 20. An earthquake epicenter can be located from records made by earthquake waves devices called.
- 23. Are earthquake generated and recorded on a seismograph.
- 25. One of the first scientists to theorize about the structure of Earth. He studies the force of gravity.
- 27. A depression in the sea-floor produced by subduction process.
- 31. The most famous fault in California.
- 35. Is a geological process that takes place at convergent boundaries of tectonic plates where one plate moves under another.
- 36. A frequently occurance on Transform Plate Boundary.
- 38. Type of seismic waves that arrive second at the seismographs and move in an up and down motion perpendicular to the direction of wave travel.