Warm-up 1.How do plankton differ from nekton? a. Plankton are floaters. c. Plankton are carnivores. b. Plankton are strong swimmers d. Plankton live on the ocean bottom. 2.The ___________ is the ocean zone is characterized by high water pressure, low temperatures, and no sunlight. a. pelagic zone c. abyssal zone b. intertidal zone d. neritic zone 3.Which animal(s) would have the greatest chance of survival ? a. one that fed through a food web b. one that fed through a food chain c. one that ate a wide variety of prey d. both a and c (food web & variety of prey)
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Warm-up 1.How do plankton differ from nekton? a. Plankton are floaters. c. Plankton are carnivores. b. Plankton are strong swimmers d. Plankton live on.
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Warm-up1. How do plankton differ from nekton?a. Plankton are floaters. c. Plankton are
carnivores.b. Plankton are strong swimmers d. Plankton live on the
ocean bottom.
2. The ___________ is the ocean zone is characterized by high water pressure, low temperatures, and no sunlight.a. pelagic zone c. abyssal zoneb. intertidal zone d. neritic zone
3. Which animal(s) would have the greatest chance of survival?a. one that fed through a food web b. one that fed through a food chainc. one that ate a wide variety of preyd. both a and c (food web & variety of prey)
Classifying Marine Organisms:
Where live & How move.
1. Plankton
2. Nekton
3. Benthos
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What does this picture show us?
Density…What is it?
Density = Mass ÷ Volume– How heavy for size…
↑ Salinity = ↑ Density
↑ Tempo = ↓ Density
Ocean LayersLayered by density.
1. Surface Zone– Shallow– Mixed (waves &
wind)
2. Transition Zone– Thermocline– Pycnocline
3. Deep Zone– No sunlight– Cold & Dense
THERMOCLINE PYCNOCLINE:
Rapid Increase in Density with Depth.
“Salinity.”
“Salinus” = salt• Salinity = amount of salt dissolved in water
• Parts per 1000 = ‰
• Most of the salt in seawater = common table salt.
Sources of Salts
1. Weathering E_________
D_________
2. Earth’s interior!– Volcanic eruptions
ROSIONEPOSITION
REVIEW:1. If we poured a cup of salt into our aquarium
what would happen to the salinity of the water?
2. What is the difference between a Thermocline and a Pycnocline?
3. Where is the densest layer of the ocean located? What is it called?
The salinity (amount of salt in water) would INCREASE