| A | B |
|---|
| continental rise | part of a continental margin that separates a continental slope from the ocean floor |
| deep zone | below the thermocline |
| turbidity current | carries large amounts of sediments |
| submarine canyon | deep, v-shaped valley cut in rock of continental shelf and slope |
| abyssal plain | large flat area on ocean floor |
| oceanographer | scientist who studies the ocean |
| shoreline | boundary where tdhe land and ocean meet |
| salinity | amount of dissolved salts in ocean water |
| continental margin | edge of continent that meets the ocean floor |
| seamounts | underwater volcanic mountains on ocean floor |
| coral reef | limestone rocks surrounding a volcanic island |
| contienental shelf | flat part of coninental margin covered by shallow ocean water |
| guyot | flat-topped seamount |
| trench | valley on ocean floor where old ocean floor is subducted |
| continental slope | part of continental margin at edge of a continental shelf |
| thermocline | zone where temperature of ocean water drops rapidly |
| surface zone | zone where ocean water is mixed by waves and currents |
| atoll | ring of coral reefs surrounding an island that has been worn away |
| fringing reef | coral reef that touches the shoreline of a volcanic island |
| midocean ridge | undersea mountain chain where new ocean floor is produces |
| barrier reef | coral reef sparated from island by a lagoon |
