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Science 6
WA Ch 2 Oceans lessons 3 & 4
| Question | Answer |
|---|---|
| What causes cold, deep currents to form in the oceans near the poles? The sinking of ____, _____ water with high _____ | dense, cold, salinity |
| A large stream of moving water that flows through the oceans is called a(n) ____ | current |
| The densest ocean water is generally found in the ____ zone. | deep |
| El Niño can cause ______ and often ______ weather conditions | unusual, severe |
| Benthos are organisms that live on the ________ | ocean floor |
| Give an example of nekton | dolphin |
| The part of the ocean that extends from the low-tide line to the edge of the continental shelf is the ______ | neritic zone |
| The organisms that form the base of most open-ocean food webs are _____ | plankton |
| Free-swimming animals that can move throughout the water column are called ______ | nekton |
| The area that stretches from the highest high-tide line on land out to the point on the continental shelf exposed by the lowest low tide is called the _______ | intertidal zone |
| Deep currents are caused by differences in the ________ of ocean water. | density |
| Crabs, lobsters, and sponges are examples of ___________, or organisms that live on the ocean floor. | benthos |
| Animals in the __________ zone must be able to survive periods of being exposed to air as well as periods of being underwater. | intertidal |
| A large, powerful warm surface current in the Atlantic Ocean that affects the climate of land in its path is the ____________________. | Gulf Stream |
| Beyond the edge of the continental shelf lies the ____________________ zone, which is the deepest and darkest area of the ocean. | open-ocean |
| Algae can only live in parts of the ocean that receive enough ____________________ to allow them to carry out photosynthesis. | sunlight |
| T/F In general, surface currents that flow from the tropics toward the poles carry WARM water. | TRUE |
| T/F The pressure of ocean water INCREASES as depth increases. | TRUE |
| T/F The neritic zone is the part of the ocean located above the CONTINENTAL SHELF. | TRUE |
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