1. Vocabulary – Test Feb. 3
Oceans

2. Ch. 18 Vocab. re: WAVES
10- wave: a rhythmic movement (of sea water) where energy is passing through the water
11- crest: the highest point of a wave
12- trough: the lowest point of a wave
13 – wavelength: the horizontal distance measured between the crests (or the troughs) of two adjacent waves
14- breaker: a collapsing ocean wave that forms in shallow water & breaks onto the shore
15- tide: the daily rise & fall in sea level caused by the interaction of gravity in the Earth-Moon system

3. Ocean Floor Features Vocabulary
Continental shelf: End of continent that extends beneath the ocean; flat area we call the “beach”
Continental slope: where the ocean water gradually gets deeper; extends from edge to shelf toward ocean floor.
Abyssal Plain: Flat seafloor areas 4,000 to 6,000 meters below the ocean surface.
Mid-Ocean Ridge: an underwater mountain chain; where new ocean floor is formed
Trench: long, narrow depression in ocean floor with steep sides

4. Ch. 19 Vocabulary Words
6 – photosynthesis: the production of food using energy from the Sun 7 – chemosynthesis: the production of food using chemicals rather than sunlight (nitrogen and sulfur compounds) 8 – plankton: marine organisms that drift with the currents 9 – nekton: animals in the ocean that actively swim (rather than drift) 10 – benthos: plants and animals living on the sea floor 11 – estuary: area where the mouth of a river opens into the ocean (fresh water meets salt water) 12 – reef: rigid, ocean margin habitat built by corals 13 – bioluminescence: the ability of a plant or animal to produce their own light

5. Practice labeling this seafloor diagram
Match the letters with the feature:
Continental shelf ____ Trench _____ Seamount _____
Abyssal Plain _____ Mid-Ocean Ridge _____
Continental Slope _____ Volcanic Island _____