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Oceans Flashcards
| Question | Answer |
|---|---|
| Sediment | the matter that settles at the bottom of the ocean and is made up or rocks, minerals, and remains of plants and animals |
| Continental Shelf | the underwater edge of a continent |
| Continental Slope | a steep slope that separates the continental shelf from the deep ocean basin (abyssal plains) |
| Continental Rise | the area at the bottom of the continental slope; it is a vast underwater hill made from tons of accumulated sediment |
| Abyssal Plain | very wide, very flat sections of the deep ocean floor |
| Ocean Trench | a very long, narrow canyon-like depression deep in the ocean floor |
| Current | a body of water that moves very quickly in one direction through surrounding waters that move more slowly |
| Salinity | the measure of all salts dissolved in water |
| Depth | a measurement of how deep a body of water is |
| Plankton | tiny organisms that form the base of the ocean food web |
| Algae | underwater organisms, such as seaweeds; they perform photosynthesis, but do not have roots, stems or leaves |
| What are the 3 basic movements of the ocean water? | 1. currents 2. waves 3. tides |
| What causes the waves in the ocean? | wind |
| A coral reef is an example of an __________. | ecosystem |
| What area in the ocean would has the fewest living organisms (plants and animals)? | the deep, dark ocean trenches |
| Ecosystem | all the populations of living and nonliving things that interact with one another in a certain place |
| Community | all the different populations of plants and animals living together in the same place |
| Population | a group of organisms of the same kind living in the same place Examples: a school of fish, a herd of cattle, a flock of geese |
| Niche | the role played by a species in the community it inhabits: -where it lives -what it eats -what preys on it -what it does what it needs |
| Food Web | a diagram that links organisms to all their varied food sources in a community and shows the flow of energy. (a food chain is a linear sequence showing one organism being eaten by another) |
| What causes the tides? | the gravitational pull of the moon |
| What causes currents? | wind patterns and differences in water temperatures |
| Consumer | an organism that eats plants or eats other animals that eat plants |
| Decomposers | organisms that help enrich the soil by breaking down the remains of dead or decaying plants and animals |
| Producers | plants that make their own food and are a source of food to animal species |
| Organism | any living thing on the planet |
| Oceans | immense bodies of salt water -they cover 70% of the Earth's surface -the hold 97% of Earth's water |
| Dichotomous Key | a tool that helps to sort items in the natural world into categories, such as insects, mammals, tress, and rocks |
Created by:
ajlight
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