| 1. | region | A. | elliptical paths that planets follow around the sun |
| 2. | tectonic activity | B. | areas that share common characteristics like Climate, religion, language, education, states and territories, borders of a nation |
| 3. | plate tectonics | C. | an imaginary line that runs through the earth's center between the North and South poles |
| 4. | tsunamis | D. | earthquakes that happen on the ocean floor and create huge waves that can decimate nearby cities and towns |
| 5. | relative location | E. | People and ideas get around. |
| 6. | crust | F. | landscapes or individual features of land and water such as mountains and rivers |
| 7. | erosion | G. | large land areas |
| 8. | Equator | H. | tells you where it is |
| 9. | plateau | I. | the wearing away of the surface, such as a riverbank that erodes as the river water washes away soil. |
| 10. | leap year | J. | both plateaus and plains are flat, but a ____________________ rises above the land around it. |
| 11. | axis | K. | what is it like when you get there? |
| 12. | hemispheres | L. | Northern, Southern, Eastern, Western halves of the earth indicated by an imaginary line. |
| 13. | human/environment interaction | M. | the study of earth in all its variety |
| 14. | equinoxes | N. | an imaginary line that circles the earth midway between the North and South Pole like a belt. |
| 15. | grid system | O. | a theory that states the earth's crust is not an unbroken shell but consists of moving plates and layers of rock. |
| 16. | landforms | P. | a narrow piece of land that connects two larger pieces of land |
| 17. | weathering | Q. | the air surrounding the earth, a cushion of gases about 1,000 miles thick. |
| 18. | revolution | R. | a complete trip around the sun that takes 365 1/4 days for the Earth to make |
| 19. | mantle | S. | a piece of land that is surrounded by water on three sides |
| 20. | atmosphere | T. | caused by the earth tilting on its axis away from the sun |
| 21. | longitude | U. | when water, chemicals, and frost break surface rocks into gravel, sand, or soil. |
| 22. | isthmus | V. | a rock layer about 1,800 miles thick that is the middle layer of the earth |
| 23. | latitude | W. | the outer layer of the earth, only about 5-30 miles deep, including both ocean floors and continents. |
| 24. | core | X. | the center of the earth made up of a dense core of hot metal |
| 25. | peninsula | Y. | movement of the layers of rock and plates that have caused parts of the earth to fold like paper and create other landforms |
| 26. | Seasons | Z. | a huge system of stars |
| 27. | solar system | A1. | beginning of winter in the Northern Hemisphere |
| 28. | orbit | B1. | cracks in the earth's crust. |
| 29. | strait | C1. | planets and other bodies that revolve around the sun |
| 30. | summer solstice | D1. | an exact position on the globe |
| 31. | winter solstice | E1. | midway between the two solstices when earth's rays are directly overhead at the Equator |
| 32. | earthquakes | F1. | the design that lines of longitude and latitude make, similar to the game Battleship |
| 33. | geography | G1. | violent jolts caused by tectonic activity |
| 34. | place | H1. | imaginary lines that circle the earth parallel to the Prime Meridian |
| 35. | absolute location | I1. | describing how far something is relative to some other place like Stillwater is 30 minutes from Carney |
| 36. | faults | J1. | an extra day in the calendar every four years to make up for the 1/4 day in each revolution. |
| 37. | movement | K1. | imaginary line that circle the earth parallel to the Equator |
| 38. | galaxy | L1. | a narrow body of water between two pieces of land. |
| 39. | location | M1. | What does the environment do for the people? What do the people do for the environment? |
| 40. | continents | N1. | beginning of summer in the Northern Hemisphere |