| A | B |
|---|
| Hypothesis | an educated guess |
| Theory | an explanation that has been verified by esperimentation |
| Law | an explanation that has been proven to be true |
| Geology | the study of the solid earth |
| Oceanography | the study of oceans |
| meteorology | the studt of the atmosphere and weather |
| astronomy | the study of the universe |
| 93000000 Miles | Distance earth is from the sun |
| 365 1/4/D | Earth's Revolution |
| 24H | Earth's Rotation |
| 8000 miles | Earth's diameter |
| 25000 miles | earth's circumfrence |
| Lithosphere | tge solid nonliving portion of the earth 29% |
| Hyrosphere | ll of the water 71%, average depth 2.5 miles |
| Atmosphere | the layers of gas that surround earth |
| Biosphere | part that can sustain life |
| Oblate Spheroid | Bulges at the equator and flattened at the poles |
| Latitude | distance North or South of the equator |
| Longitude | a distance east and west of the Prime Meridian |
| Equator | 0 degrees latitude, half way between poles |
| Prime Meridian | 0 degrees Longitude through Greenwich England |
| International Date Line | 180 degrees Longitude, Opposite the Prime Meridian |
| greatcircle | any circle that is a circumference |
| degree | 1/360 of a circle; approximately 70 miles of latitude |
| minute | 1/60 of a degree |
| second | 1/60 of a minute |
| nautical mile | 1 minute of latitude; 1.16 miles |
| Knot | 1 nautical mile per hour |
