Across
- 3. water water beneath the Earth's surface.
- 5. a collection of maps.
- 6. - Earth's innermost part and according to seismological studies.
- 9. lacking in rainfall, very dry.
- 12. the point on the Earth's surface directly above the focus of an earthquake.
- 14. -a large natural stream of water flowing in a channel to the sea, a lake, or another such stream.
- 15. similar to a groin but built to keep sand out of a harbor entrance.
- 19. bent rock strata.
- 20. -the tough outer part of a loaf of bread.
- 21. layer -that prevents dangerous radiation from the Sun from reaching the surface of the Earth.
- 23. - the region of the upper atmosphere in which temperature increases continuously with altitude
- 25. -the weather conditions prevailing in an area in general or over a long period.
- 26. -the lowest region of the atmosphere.
- 27. a planetary satellite.
- 28. -a very large expanse of sea, in particular, each of the main areas into which the sea is divided geographically.
- 32. to change back and forth uncertainly.
- 34. -the region of the earth's atmosphere above the stratosphere
- 36. -a large natural elevation of the earth's surface rising abruptly from the surrounding level; a large steep hill.
- 39. rocks -the dark, dense igneous rock of a lava flow.
- 40. the tectonic region in which two plates meet.
- 42. the mass of an object divided by its volume.
- 43. shapes, like mountains or hills that make up the Earth's surface.
- 44. distance over which wave-forming winds blow.
- 46. a general term for semiarid and desert lands.
- 47. lake a lake of lava, usually basaltic, in a volcanic caldera.
- 48. -the angular distance of a place north or south of the earth's equator.
- 50. -(of a river or road) follow a winding course.
- 51. a giant structure that contains hundreds of billions of stars.
Down
- 1. core - is the second to last layer of the Earth.
- 2. devil a small, dust-bearing whirlwind.
- 4. the mass of an object divided by its volume.
- 7. -a sudden and violent shaking of the ground
- 8. a natural open space underground, large enough for a person to enter.
- 10. -the action of deposing someone, especially a monarch.
- 11. a protective wall built offshore and usually parallel to the shore.
- 12. - the process of eroding or being eroded by wind, water, or other natural agents.
- 13. -the envelope of gases surrounding the earth or another planet.
- 16. the point on the Earth's surface directly above the focus of an earthquake.
- 17. an individual grain or constituent of a rock.
- 18. -the layer of the earth's atmosphere above the troposphere
- 20. a ball of ice and dust, whose orbit is a long, narrow ellipse.
- 22. a large area of flat or nearly flat land.
- 24. -a forcible overthrow of a government or social order in favor of a new system.
- 25. to preserve, or to avoid wasteful use.
- 29. -an imaginary line drawn around the earth equally distant from both poles
- 30. circle - is the most northerly of the five major circles of latitude that mark maps of the Earth.
- 31. -a circle of constant longitude passing through a given place on the earth's surface and the terrestrial poles.
- 33. living in water.
- 35. containing moisture.
- 36. -a loose sleeveless cloak or shawl, worn especially by women.
- 37. the southern portion of the late Paleozoic supercontinent known as Pangea.
- 38. deposits of wind-borne dust.
- 41. a general term for semiarid and desert lands.
- 45. -a low area of land between hills or mountains, typically with a river or stream flowing through it.
- 49. a giant structure that contains hundreds of billions of stars.