| A | B |
|---|
| plain | large, relatively flat landform |
| plateau | a landform created next to mountains when forces within Earth raise flat areas of horizontal rock |
| folded mountain | mountain formed when rock layers are squeezed from opposite sides, causing them to buckle |
| upwarped mountain | mountain formed when Earth's crust is pushed up and eroded, forming showy peaks and ridges |
| fault-block mountain | jagged mountain formed from huge tilted bocks of rock separated by faults from surrounding rock |
| volcanic mountain | mountain created when magma within Earth escapes to the surface |
| equator | an imaginary line that circles Earth exactly halfway between the North and South Poles |
| latitude | a distance north or south of the equator, expressed in degrees |
| prime meridian | imaginary line running from the North Pole to the South Pole passing through Greenwich, England |
| longitude | a distance east or west of the prime meridian, expressed in degrees |
| International Date Line | an imaginary line in the Pacific where we change calendar days |
| Mercator projection | map-projection method using parallel longitude lines; distorts area not shapes |
| Robinson projection | map-projection using curved longitude lines; little distortion |
| conic projection | a map projection made by projecting points and lines from a globe onto a cone |
| topographic map | map that uses contour lines to show changes in elevation at Earth's surface |
| contour line | a line on a topographic map that connects points of equal elevation |
| contour interval | the difference in elevation between two side-by-side contour lines on a topographic map |
| map legend | a key on a map which explains all the symbols used on that map |
| map scale | relationhip between distances drawn on a map and the actual distances on Earth's surface |
| Landsat Satellite | satellate that uses a mirror to detect different wavelengths of reflected or emitted energy |
| Topex-Poseidon Satellite | satellite that collects information about Earth's oceans using radar |
| sonar | use of sound-wave echoes to detect the size and shape of underwater structures |
