SLIDE 1
Oceanography Notes The three major oceans are:
- 1. ___________-largest, deepest, coldest, least salty.
- 2. ___________- second largest, shallow, warm, salty.
- 3. ___________- intermediate in depth, temperature, and salinity.
The ____________Ocean near the North Pole and the _______________ Ocean near the South Pole contain vast expanses of sea ice. Methods of Studying the Ocean: The Topex/Poseidon _______________ orbits 1331 km above the Earth, gathering information about the oceans. _____________ maps ocean floor topography by timing how long it takes sound waves to bounce off the ocean floor. Underwater vessels called _________________ investigate the deepest ocean trenches. SONAR:
- Sound waves travel how fast in seawater? ____________________
- How deep is the water if it takes ten seconds for the sound wave to go from ship to ocean floor and back to
ship? ________________________________ Salinity: The amount of salt per unit water is known as salinity. The most abundant salt in seawater is ________, but there are many other salts present in the form of ions. The average salinity of seawater is _____ ppt. Therefore, for every 1,000 ml water, there are ___ grams of dissolved salts. Near the equator salinity is __________ than average due to ___________________. Near the poles salinity is __________ than average due to _______________. In the Mediterranean the salinity is __________than average due to __________. Colorful Seawater:
- What makes the ocean water in the picture to the left different colors?
- Why would a shrimp that appears bright red at the surface appear black at greater depths, and why might this