| A | B |
|---|
| wave | up-and-down movement of surface water |
| jetty | wall of rocks built out into the ocean |
| headland | rocky point along a shore |
| desalination | removal of salt from sea water |
| sonar | sound waves that can be used to map the ocean floor |
| shore | area where ocean and land meet |
| submersible | small underwater vehicle |
| tide pool | pool o fsea water found along a rocky shoreline |
| scuba | self-contained underwater breathing apparatus |
| water pressure | weight of water pressing on an object |
| tide | repeated rise and fall in the level of the ocean |
| salinity | percent of salt in ocean water |
| current | stream of water that flows like a river through the ocean |
| Earth's rotation causes ocean currents to | bend to the right in the Northern Hemisphere |
| Differences in water temperature may cause | deep ocean currents |
| Cause of tides | Earth's rotation and the gravitational pull of the moon and sun |
| Alvin | submersible that discovered underwater vents along the mid-Atlantic ridge |
| direction rip currents travel | away from the beach |
| reason for salinity | minerals weathered from Earth's crust |
| why waves form | wind blows over the surface of the water |
