| Question | Answer |
|---|---|
| Marine Science (Oceanography) |
Discovering and unifying principles in data obtained from the Ocean and it's associated life forms and bordering lands. |
| Earth facts | Covered 71% by water 61% N. Hemisphere 815 S. Hemisphere |
| Ocean stats | Average depth 12,451' (3800m) Max depth 36.000' (11,000m) Average Temp. 39f (3.9c) |
| Ocean | a body of saline water occupying depressions in the Earth's surface |
| 4 Primary Sub-Divisions of Marine Science (Which are often inter-related) | Geological- Earth's crust Chemical- Gasses, how solids are dissolved into water. Physical- Waves, Currents, Climate Biological- Living marine organisms |
| Science | The systmatic process of asking questions about the observable world by gathering and studying information. |
| Scientific Method | A) Observation B) Hypothesis C) Test D) Conclusion |
| Hypothesis | A speculation proved through controlled experiments. |
| Early Marine Science was built out of ______? | Necessity |
| Historically speaking, the Eqyptians | And trade vessels on the Nile in 100 BC |
| Historically speaking, the Greeks | Had the first ship sail across the Atlantic. 900-700BC Greeks also discovered North south Currents named (Okeeanos)River. |
| Polynesia and China where also players in Sea Voyage | none |
| Cartographers | Chart makers, recorded info on locations, landmarks and currents. Most early expeditions had a cartographer aboard |
| Maps are to land, as charts are to _____? | Water based info. Currents, reef, coasts. |
| When was the Library of Alexandria founded? | 3rd Century B.C. It housed information an all aspects of hunam endeavor. |
| Celestial Navigation | Using the stars to navigate. Developed at Alexandria. |
| 1st to measure the Circumference of the Earth | Eratosthenes and it measured 40,070 km |
| Circumference of the Earth was later improved by who? | Ptolemy, and he measured it at 28,800km, much more accurate. |
| 1st person to chart lines of latitude through landmarks of the time? | Eratosthenes |
| The earth was later divided into equal units at 360 degrees. | Hipparchus (165-127 B.C. |
| He added North to maps, so people would always know which way was north. | Ptolemy |
| Lines of Longitude unlike Latitude? | Are not parallel |
| The Prime Meridian is located where? | Greenwich, England |
| Degrees for Navigation | 0 north 90 east 270 south 135 south-east 360 west |
