5th Grade Oceans Unit (Fairfax Co) Flashcards

Atlantic Ocean
Terms Definitions
The approximate amount of the earth that is covered by water
This causes the high and low tides of the ocean
The moon
Anything that has mass or takes up space
The smallest piece of a pure substance
A group of two or more atoms
A substance made of atoms of all the same type. (example: copper or oxygen)
Made of more than one type of atom (for example water- H20)
A combination of two or more compounds or elements WITHOUT a chemical reaction (These can be separated)
A mixture where the particles of two or more pure substances are mixed evenly. (lemonade for example)
The amount of mass per volume. (Salt water has a higher ___ than fresh water because the molecules are closer together in salt water.)
The amount of salt in a salt water solution
The flat zone extending from the beach to the continental slope.
Continental Shelf
The steep slope down to the ocean floor.
Continental Slope
The transition area before the abyssal plain.
Continental Rise
The bottom of the deep ocean basin.
Abyssal Plain
The type of ocean movement that occurs in the sunlight zone. They're caused by wind.
Surface Currents
Occur in the midnight zone. They are caused by differences in density due to temperature and salinity.
Deep Ocean Currents
Change in water level caused by the pull of gravity from the moon.
Wind energy moving through the water
A strong northern traveling current, located in the Atlantic Ocean.
The Gulf Stream
The three ocean zones
Zone 1: Sunlight Zone
Zone 2: Twilight Zone
Zone 3: Midnight Zone
When living and non-living factors in an area interact. (Example: In our school ecosystem, teachers interact with students, and students interact with teacher (biotic). All of us interact with the air (abiotic).
Diagram that shows the feeding relationships among a few organisms.
Food Chain
A complex diagram that shows all the feeding relationships between all the organisms in an ecosystem.
Food Web
Where an organism lives; for example, the ocean
How an organism fits into its environment
Plant-like organisms that float at the surfac e of the ocean and use photosynthesis to produce energy. (They make the energy that all other organisms need to survive.
When non-native, harmful products, animals or substances are introduced into an environment. Example: oil spills, dumping garbage, chemical runoff
The manipulated, or changed variable
Independent Variable
The responding variable
Dependent Variable
An educated guess written in an "if...then...)
Things that do not change in the experiment.
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