| A | B |
|---|
| 70% | Amount of Earth covered by water |
| Sodium chloride; NaCl | Most common salt in ocean water |
| salinity | Term decscribing the amount of salt in water |
| currents | A river within the ocean caused by wind, water densities, and the Earth's revolution |
| Gulf Stream | Warm current off the Virginia shore |
| mixes ocean water, provide navigation routes for ships, effects plant and animal life in areas of ocean | 3 effects of ocean currents |
| tides | These are caused by the gravity of the moon |
| waves | These are caused by wind or earthquake |
| surface of the ocean | This area of the ocean has the greatest sunlight, the highest temperature, lowest pressure, greatest amount of animal life |
| phytoplankton | Plant-like organism on ocean surface that produce most of the oxygen of the Earth |
| continental shelf | Feature of the ocean at the edge of continents; recreation, fishing, oil rigs |
| continental slope | Steep drop at end of continental shelf |
| continental rise | Bottom of continental slope that ends in a flat plain |
| Abyssal Plain | Flat, bottom of ocean floor |
| ocean trenches | Deep cracks in the ocean floor; deepest part of the ocean |
| oceanic ridges | Underwater mountains; formed by plates running into each other |
| sea mount | oceanic ridge that remains underwater |
| island | oceanic ridge that remains above water |
| tsunami | Tidal wave caused by an earthquake |
| navigation | Direction finding on water |
| Brackish water | Term for a mixture of salt and fresh water |
| H2O | Chemical formula for water |
| oceanography | Study of the Earth's oceans and the life in them |
| estuary | Semi-enclosed area where fresh and salt water meet |
| sunlight, twilight, midnight | Name the 3 ocean zones |
| sunlight zone | Top zone of the ocean |
| twilight zone | 100 to 1000 meters deep; little light |
| midnight zone | below 1000 meters; dark, freezing, little life |
| coral reef | Limestone structure formed in warm, salt water by living organisms and skeletons; |
| Atlantic, Pacific, Indian, Arctic and Southern | Name the 5 oceans of the world |
| waves, tides, currents | 3 ocean motions |
