Across
- 4. earths outest most layer and earths thinnest layer.
- 10. vibrations caused by the tectonic plates slipping against each other.
- 11. an igneous rock having abundant light-colored minerals.
- 12. a black or dark coloured volcanic glass, usually composed of rhyolite.
- 13. A type of eruption consisting of the explosive ejection of incandescent fragments of new viscous lava, usually on the form of blocks.
- 14. and area surrounded by a lava flow.
- 15. a submarine volcano
- 17. an opening formed by a collapse in the roof of a lava tube.
- 18. a person who studies in earthquakes.
- 21. plate/ It is the plate where the Australian main land sits.
- 23. Term used to describe volcanic rock or magma composed chiefly of dark-coloured, iron- and magnesium-rich minerals.
- 24. Igneous rocks made mostly of the mafic minerals hypersthene, augite, and/or olivine.
- 26. it's a smaller earthquake which happens after a bigger one
- 29. the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
- 32. drift/ The theory, first advanced by Alfred Wegener, that Earth's continents were originally one land mass. Pieces of the land mass split off and migrated to form the continents.
- 34. scale/ We use this type of scale to measure the strength of the earthquake.
- 35. fine particles of pulverized rock blown from an explosion vent.
- 37. boundaries/ the movement of two tectonic plates moving into each other.
- 38. core/ a liquid core that surrounds the earths inner core.
- 39. the process by which solid, liquid, and gaseous materials are ejected into the earth's atmosphere and onto the earth's surface by volcanic activity.
- 41. core/ innest most layer and it is solid due to tremendous pressure.
- 42. the reflection of light from the surface of a mineral.
- 44. It’s the flow of lava that comes out and sets smooth and comes out slowly.
- 45. volcanic ash that has fallen through the air from an eruption cloud.
- 48. It's a molten, liquid rock found under the surface of the earth.
- 49. a small earthquake.
- 50. earths thickest layer
Down
- 1. the solid matter in which a fossil or crystals embedded.
- 2. single large landmass made up of all the continents connected together that broke apart 200 million years ago.
- 3. a slop formed at the base of a steeper slope, made of fallen and disintegrated materials.
- 5. Materials of all types and sizes that are erupted from a crater or volcanic vent and deposited from the air.
- 6. a passage followed by magma in a volcano.
- 7. boundaries/ the movement of two tectonic plates sliding past each other.
- 8. the strength of an earthquake, measured with numbers 1 to 10.
- 9. A crystal that resembles a phenocryst in igneous rock, but is a foreign to the body of rock in which it occurs.
- 16. a person who studies in volcanoes
- 19. A vertical conduit through the Earth's crust below a volcano, through which magmatic materials have passed. Commonly filled with volcanic breccia and fragments of older rock.
- 20. The opening at the earth's surface through which volcanic materials issue forth.
- 22. an instrument that is used for measuring the strength of earthquakes.
- 25. It’s the name you call lava when it sets really rough.
- 27. the force of an earthquake which effects places far away.
- 28. A small air pocket or cavity formed in volcanic rock during solidification.
- 30. boundaries/ the movement of two tectonic plates moving away from each other.
- 31. A vertical conduit through the Earth's crust below a volcano, through which magmatic materials have passed. Commonly filled with volcanic breccia and fragments of older rock.
- 33. the area of land directly over the centre of an earthquake.
- 36. a word to describe an inactive volcano.
- 40. a Hawaiian term for lava with a smooth, billowy, or ropy surface.
- 43. a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapour, and gas are or have been erupted from the earth's crust.
- 46. magma which has reached the surface through a volcanic eruption.
- 47. A weak point in the Earth's crust and upper mantle where the rock layers have ruptured and slipped.