| A | B |
|---|
| Baleen whales live in areas of the oceans rich with _____. | Plankton |
| Name the ocean zone where two tectonic plates are spreading apart. | Oceanic ridge |
| Large volcanoes rising out of the sea floor plains are _____. | Seamounts |
| Waves can form new land by _____. | Deposition |
| The _____ is the sloping part of the ocean floor that is made of sediment below the continental slope. | Continental rise |
| Colors or patterns on an animal that help keep them hidden from predators are called _____. | Protective adaptation |
| Why are most ocean plants found at shallow depths? | Sunlight does not go deep into water. |
| The beach where people usually swim is part of the _____. | Continental shelf |
| Why is ocean pollution something that should make people concerned? | We need the food that lives in healthy oceans. |
| A trench is _____. | A deep narrow valley where two plates collide; a trench is considered the deepest part of the ocean. |
| What must plankton have to survive as a primary producer in the oceans? | Sunlight and nutrients |
| This is a disturbance seen on the surface of water usually caused by wind. | A wave |
| How does ocean depth affect pressure? | As depth increases, pressure increases |
| This is a warm river of water in the Atlantic Ocean moving north along the east coast of the United States. | Gulf Stream |
| What causes deep ocean currents? | A change in temperature and salinity |
| What causes surface ocean currents? | Wind and the rotation of the Earth (Coriolis effect) |
| This is the amount of salt dissolved into a liquid. | Salinity |
| Long mountain chains that run along the ocean floor and formed from vocanic activity are called _____. | Oceanic ridges |
| The salinity of ocean water depends on _____ and _____ from nearby land. | Evaporation and run-off |
| This form of pollution results when farmers try to protect their crops from insects. It washes off into nearby water resources that are eventually dumped into the ocean. What form of pollution is this? | Pesticides |
| These are caused by the gravitational pull of the moon. | Tides |
| Water with a high salinity is _____ dense than water with a low salinity. | More |
| Name four things that help prevent pollution. | 1) Tougher laws 2) New scientific discoveries, such as new materials being used for packaging 3) Recycling 4) Cleanup patrols |
| Temperature on the ocean surface affects _____. | The temperature on land |
| This is the wide flat area that extends out from the bottom of the continental slope. | Abyssal Plain |
| As you go deeper into the ocean, how is the temperature affected? | It decreases. |
| How much of the surface of the Earth is covered by oceans? | About 70% |
| The _____is the area between the continental shelf and the continental rise. | Continental slope |
