click below
click below
Normal Size Small Size show me how
Oceans
| Term | Definition |
|---|---|
| Salinity | The total amount of dissolved salts in a water sample. |
| Sonar | A system that uses reflected sound waves to locate and determine the distance to objects under water. |
| Seamount | A steep-sided volcanic mountain rising from the deep-ocean floor. |
| Trench | A deep, steep-sided canyon in the ocean floor. |
| Continental Slope | A steep incline of the ocean floor leading down from the edge of the continental shelf. |
| Continental Shelf | A gently sloping, shallow area of the ocean floor that extends outward from the edge of a continent. |
| Abyssal Plain | A smooth, nearly flat region of the deep ocean floor. |
| Mid-Ocean Range | An undersea mountain chain where new ocean floor is produced; a divergent plate boundary under the ocean. |
| Wave | A disturbance that transfers energy from the place to place. The movement of energy through a body of water. |
| Wavelength | The distance between two corresponding parts of a wave, such as the distance between to crests. |
| Frequency | The number of complete waves that pass a given point in a certain amount of time. |
| Wave Height | The vertical distance from the crest of a wave to the through. |
| Tsunami | A giant wave usually caused by an earthquake beneath the ocean floor. |
| Longshore Drift | The movement of water and sediment down a beach caused by waves coming in to shore at an angle. |
| Rip Current | A strong, narrow current that flows briefly from the shore back toward the ocean through a narrow opening. |
| Groin | A wall made of rocks or concrete that is built outward from a beach to reduce erosion. |
| Current | A large stream of moving water that flows through the oceans. |
| Coriolis Effect | The effect of Earth's rotation on the direction of winds and currents. |
| Climate | The average annual conditions of temperature, precipitation, winds, and clouds in the area. |
| El Nino | An abnormal climate event that occurs every two to seven years in the Pacific Ocean, causing changes in winds, currents, and weather patterns for one to two years. |
| La Nina | A climate event in the eastern Pacific Ocean in which surface waters are colder than normal. |